The camera that I got good with (not only the income but images that made me feel good, that made me believe in myself) was a beat up old Rolleicord with an f:3.5 lens. Because I didn't know any better, I shot riots, demonstrations, the Ken Kesey Trips Festival, cats on stairways, motorcycle races, and lots of street stuff. Then a bunch of pros at a motorcycle race in England, all bedecked with SLR's and Leicas, said, essentially, "What're you, nuts? Trying to take action pics with that thing? Get a life." Made me feel bad and inadequate, which was really stupid of me to feel that way, analagous to your chatroom experience, Stephanie.
However, my photographs got published in a magazine just like theirs did. I think that, today, if God tossed that old Rollei at me and said, "This is it, chum. You'll have to spend the rest of your days with it," I'd feel rather relieved. No more choices for sure. So an old Nikon with a 50mm lens, or a Leica M with a 50mm lens might easily be something to live with.
In the meantime, follow your bliss. Stay away from the narrow views of chatroom pontificators. Use whatever camera you've got and take pictures, take pictures, take pictures.
Ted