Are CVT transmissions really all that bad?

I guess like everything else you have to look up who supplies the CVT. Nissan is a major owner of JATCO who supplies many of the CVTs for various manufacturers and it sounds like they chose to continue to use a design with problems. Others may not be so bad. In my case, Nissan would be off my buy list and I would hesitate with other CVTs and would prefer not to have one if I could help it.