I honestly can’t think of any pleasures I regard as “guilty”. I enjoy gaming, metal and Lego, even though I can’t afford (financially or time-wise) to indulge in Lego. Therefore I just follow Eurobricks for the latest news and release and marvel at the stuff other people manage to build.
On the gaming front I’m nit ashamed of any games I play - I even loved the first Sims game way back when. I tried the third one at some point, but it never grabbed me.
so for me it’s Osu.