I was googling about yum and reading some articles when I stumbled on bunch of articles about disabling yum from update kernel packages. Now I'm wondering why I should do that. When I update system I update all packages. Even if kernel update will mess up something you can always boot with older one (Centos has ability to maintain few kernels). In the end if you have bad day update of any package can mess things up, but keeping system up to date is one of basics rules of security.
Am I wrong ? Why I should prevent yum from kernel update?