Feature-wise some of the services on G+ might be better (their app is phenomenal, their website is pretty good, their individual products are pretty good also), but EXPERIENCE-wise, I always have a better experience on Facebook because people I care about actually use Facebook.

Photos I want to see are not on G+. The photos feature on FB is actually really good for most people. I've heard a ton of photographers like G+ though (it seems to me certain niche communities have found a good use for G+; such as photographers or bloggers)

I agree, Hangouts is absolutely amazing (this is actually the only reason my G+ account sees use), but I find FB messenger much more useful than G+ messenger. It's more featured, and more of my friends use it. Chat Heads is simply awesome in every way.

Groups on FB have created tons of experiences for me. I met a ton of people I otherwise would not have met and this is BY FAR one of the most useful things on FB to me. I can't delete my FB even if I wanted to, simply for the reason that I'm in groups for each of my classes (I'm a student), as well as groups for my summer internship, groups for the company I work for, groups for my close friends, etc. All of these are tremendously useful, and I think redesigning groups is one of the biggest potentials for Facebook right now, and a very underrated part of the experience. Sure it may lack in the features of G+ groups, but makes up for it with tons of substance.

These friends of mine and people I'd like to meet are not on G+ and so, even though Google's groups product may have more features, those feature mean nothing.

Of course everything can be improved, and as we're seeing, FB are improving each piece of their total experience one by one (launching a new newsfeed, new timeline, new search, new local, new pages etc).