Sounds like you're pretty much wanting to talk yourself out of trying to be a member of a great career choice. If you want to challenge yourself and get into something new, then do it. If not, stay in bedside nursing (or whatever it is you currently do). You can research stats all day, but by making the nursing career choice you have nursing / CRNA / NP / First-Assist to move on to. All the best with whatever you decide upon.