Let's subtitle this one "Mine's Bigger Than Yours." It's an interesting phenomenon, and one that goes way, way back: checking out someone's camera gear, and making a mental note of the relative superiority/inferiority of your own. We're all guilty of it. Admit it.
Personally, I think it's kind of fun, particularly back in the day when I was using something like the Mamiya RB 67: ha! your puny little Pentax does not stack up! And when I broke out the Burke & James 8x10 field camera? blissfully, blissfully divine. But it related only to a smug pride, and nothing more. It's just as meaningless today, perhaps even more so. I was put in mind of this during my travels last week when I realized that we're actually engaged in something of a reversal of this: incredible photographs are being made on ever smaller, less intrusive cameras. Lightweight mirrorless cameras are anything but lightweight when it comes to image quality. And the iPhone? Don't get me started. The image you see above was made on one. Now when I see someone lugging around a Canon 1D and a big gray L-series lens, I'm more disposed toward sympathizing with their sore shoulders than wondering about their pictures. Because, obviously, it was never about the cameras, ever, and to believe that bigger equipment made you a better photographer was to miss the point entirely.
I'm no pedant, honestly. If you ask, I'll simply suggest you try out lots of different cameras, try out the smartphone, experiment with whatever tickles your fancy. Buy a camera you can afford. Buy one that fits in your hand, is easy to master and comfortable to carry around. Spend your life developing your eye and mastering your craft. That'll beat 36 megapixels any day.
As for me, well, I've consigned my beloved Canon gear to the studio. My 7D syncs so nicely with my lights, and when I'm making portraits it just feels like a part of me, seamless, and effortless.
For my frequent travels and wanderings, though, I've come to really love my little mirrorless Fuji, so light, so easy to use, and so sweet. And of course, of course: I'm never, ever, anywhere without my iPhone.
There's an old saying: f 8 and be there.
There's another old saying: size doesn't matter.
I'll just leave it at that.