This can be exceedingly difficult in many areas. If you're in a big city it's probably no problem, but elsewhere it can be challenging or impossible to find people you really enjoy sober.
I don't mean that I can't get on with just about anyone while sober. But I find I'm 'faking it' and simply giving them the idea I'm having a good time. People who I'm genuinely excited to spend time with are few and far between.