Like a lot of you I'm a seasoned gigger and have played countless shows at all sorts of venues.
Me personally I like doing a soundcheck to make sure my gear is working and I have a tone I can work with. I've been in bands where certain members say "we don't need to soundcheck..." and "why set up all our stuff just for a song...?" etc. I've done shows with a line check which has been ok but monitor levels and stuff are always out and I don't like it.
Are you one of those that enjoy doing a s/check or find it unnecessary?