Mostly, yes. But the thing is they have very varying styles even though they all play in the same genre so that's why I don't get bored I guess.
MDM-ish bands I listen to daily In Flames, Amon Amarth, Wintersun, CoB, Neaera, Be'Lakor, Hypocrisy, Kalmah, Sacrilege, Soilwork, King of Asgaard and Scar Symmetry.
But I also love Gojira, Mastodon and Ensiferum that I also listen to a lot, as well as some other stuff. I mean I really enjoy Folk Metal but I actually only really listen to Ensiferum, I know there are other great ones as well but I spend most my time listening to MDM so I wouldn't have time listening to a bunch of folk bands. Also like some trance, but only listen to it casually and not on my iPod.
But it's 85% metal and the rest 15% is other genres of music. I doubt I'll get tired of metal anytime soon, there is so many different subgenres to listen to anyway if I get tired of one.