Feels like the exact opposite to me. I'll get to that.
I've practiced so much with 3-fingers it's pretty much my default. I use it for styles where it is 'unnecessary', although this is a questionable concept to me; because you CAN do something with one finger as opposed to two, is it the 'correct' thing to do? I don't really know, but it seems like more work with one digit as opposed to two most of the time. Which brings me back to Joedog's idea that using 2 fingers when you can use 3 might be lazy or something. 2 is more work in most cases, so i can only assume youre not fluid with 3 if you feel that it is more work.
I'm at the point where I have to consciously stop myself from using 3 fingers in some (string skipping) passages as it is easier with two, so in short yes, you can use it as your default, although you will find reverting to 2 works better in some spots. Sometimes I try and use 2 fingers for faster (16th not type) passages just to keep my chops up, but it doesn't last long as I always find it futile as it will never be as fast or easy as 3 for straight 4/4 stuff for me.