Allow me provide some different points of view.
First, the things that hold back your enjoyment might not be a G27, but a dedicated rig. I am now racing on a dedicated 80/20 rig with DD and all other stuff, but I started from a G27 clamped on a table just like you. The things that annoy me the most was that the desk position was not right for me but my desk was not adjustable. Also, my pedals moved, especially when I need to drive a manual and use the clutch.
Also the hassle of cleaning up every time I need to use my desk to work and write was just painful. That is also why the dishwasher exists, to let people enjoy the good part of cooking and save them from the pain of cleaning up.
Therefore I suggested you to buy a used dedicated rig and play gt sport on a ps4, if you have a TV. Let's say you do have a TV and buy a used rig for around 100 euro. This removes all the hassle.
Now if you want to play, you can just sit down, turn on the TV and drive. Your pedal won't move when you push it and most annoyance is gone.
Do you feel like you are enjoying it more and willing to drive more? Ask yourself these questions then you can decide what you want to do next.
PS: If you don't have a PS4, why not buy one? You can easily find a good deal (or even better price if you don't mind a used one) plus a lot of PS exclusive games like Bloodborne. Oh man I love soul series and I platinum all of them. You mentioned you like play other kinds of games. Give Bloodborne a try!
PPS: I don't suggest buying a used wheel base as it is something that was likely "abused" in the past. However, buying a used rig and a PS4 is different. A rig is just some pieces of metal and there is no complicated electronics. You can spot the flaws easily. PS4 is just a console and it sits on the TV shelf once setup is complete. It is less likely you will buy a malfunctioned PS4.
PPPS: GTS might not be the most realistic sim out there but it is well polished with free updates and pretty decent graphics. (I don't want to get into the debate of simcade stuff, just some no true Scotsman fallacy..) It is not my favorite but I really enjoyed playing it, especially with friends.
PPPPS:
NEVER underestimate the damage a small hassle can make to your hobby. The period I raced the least is the time when I bought a CSL Elite and a half a rig. (A rig with only wheel and pedals) Every time I want to play on PC, I need to move my heavy rig from the corner of the room. After a while I realized, F**k it, I am going ALL IN. I finally built a full 80/20 rig and I started to drive more again. Even true love can be deeply damaged by hassle. Not only your simracing hobby, but also other things like marriage. Every year there are tons of couple break up just because they live in different cities. Didn't they love each other? Of course they love each other. Did they betray each other? No, they are loyal as always. Why did they break up after all?
HASSLE, the hassle of not being around, the hassle of booking a flight every time they want to meet, the hassle of time difference if they live in different continent. You wake up at the moment she is going to sleep. Even soul mates cannot stand this.
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The second is to try something real. I am actually one of those people who went from real driving to sim racing. To me, I play sim racing because I cannot afford to race. Trackday is crazy expensive. I often need to pay for brake replacement, maintenance and many other things. That is my road car. If you own something like a radical SR3 or GT3 car, the engine needs to be rebuilt every 8000-10000 miles. (Some fun fact. NSX GT3's engine needs a refreshment around every 8000 miles since it is turbocharged and is more complicated. AMG GT3 still has the old 6.2 NA V8 so the engine will last over 10000 miles. The car itself is much cheaper than the NSX! (NSX GT3 a little less than 600K USD, AMG a little above 400K USD.) You needs a LOOOOTTT of spare parts as well. Also, good helmet, suits, gloves are all crazy expensive and you need to pay your engineer....
But I freaking love driving in circles and wasting gas. Engine roar makes feel peaceful. The complicated world is leaving me alone for a moment to enjoy myself when I was on track. I felt utterly alive. That is why I seek something close to track driving even I am not on a track.
With all that being said, you can try to find some karting opportunity around you. Sign up and just drive. Do you love driving in circles? Do you get happiness just because you clip the apex correctly? If so, then you have a racing heart and the hardware is preventing you from expressing and practicing your love.
If you can't find a karting place. No problem. One thing that normal street driving cant provide is the visceral feeling and the sense of connectedness. This can all be corrected by a motorcycle! Rent a motorcycle, find a twisty road and ride. Ask yourself the same questions. Motorcycle guys and car guys have a lot in common and I often find myself attracted by things like motoGP. Give it a try!
