Just that I was most often working on pre-existing projects like GNU Make. I can't force them to go for Objective-C.
When I'm doing something on my own it's usually so small that it's not really worth it - something like a python C module where there's already a kind of OO model built in. I think my last C program was a set of functions for GNU Make that you can load up - a collection of tiny functions to do simple things that GNU Make should have been able to do 15 years ago but is too constipated to get on with.
Once or twice I've had the perfect sized mini-project but have been in a team where using Objective-C would get me into trouble because the rest of the team love C++ or whatever and would immediately demand that I use that instead. For some reason using C didn't bother them.
