Listen to Bart, although I do have answers for the last 2 questions:

How many shaves did it take before you knew you could do it?
I knew I had it in me, I just had to learn.

How many shaves would you endure before deciding you're not the target market for straight razors?
The target market is "people with hair that needs to be shaved off." I fit the bill. How many shaves would I endure: I'm not a quitter. Are you?