how can people use linux when ....

there is a compatibility issue??

Are they not gamers?
They don't use general programs??
or are softwares actually compatible on linux??

There is no compatibility issues with linux, its the software YOU know about that have compatibility issues.

I'm a gamer, i play a lot of Quake1,2,3,4 and UT1,2003,2004, xmoto! ;) cube1/2 and such..

I use a lot of general programs.. bash,cd,cp,mv,rm,nano,links,firefox,thunderbird,gimp,dia,oo.o,xaraxl,xchat,gaim,kate,xmms,cinelerra, etcetcetc
actually, i dont know what you are talking about here.. ?

Yes, pretty much every piece of software you could ever need is not only compatible, but designed for linux.

Also, you dont have to be a techie to use linux, if you have any level of basic english skills, you can read your way into being a linux user.