Is doing fwbs always a bad idea.

Me till last month hated the concept of fwb and thought it was just a sugercoated less aggressive way of rejecting u while using u like saying "I want to use you 4 body but don't want to feel like asshole/bad guy about myself". But what if you really want to do stuff and want to spend time with them but you can't get them to date you cause different religion and it's gonna lead to huge fights and drama by ppl who literally can't mind their own business and have to bring bunch of heavy politics and bunch of nonsense just cause I want to be with someone I like. Ts so annoying man.And not just that im someone who gets a crush very very rarely and I'm insanely picky so it's not like i can easily move on to someone else like if I get a crush I only want them for the next 5-6 years at least. Should I just start a secret fling thingy atp and do living together with the dude. I have too much feelings to stop thinking about it. What should I do? But i just know I'll develop more feelings from doing hookup shi knowing my aah.