If you go to a thread titled "Is nitro on the way out" expect to find a lot of nitro flyers saying that they wouldn't fly anything else. If people who fly glow powered planes go to some other threads we can expect to see "I guess they just can't handle the new technology".
Sometimes when I'm flying the only glow plane at the field and the others are all flying electric I get some ribbing about why I don't fly electric. But that's rare. Personally I love my glow engines and think of them as part of the hobby as much as my planes, but I have friends flying nothing but electrics and we're still friends. Most guys have both (including me, because indoors electric is the only way to go).
Jim