Pace- on the one hand you say that the problem with the IMC is that holders don't stay in practise then you say that when you had one you used it all the time. Why do you assume that no one else does? I use mine when I can as I enjoy flying on instruments (I know, a little sad probably).
It's not a get out of jail card, it's something I use regularly and wouldn't consider being without. I don't know anyone else who only uses it in an emergency either.