The hair

I have been trying to grow my hair to my butt. Why you ask. So I can cut it and donate it. I have done it before but I get the 10 inches to donate and I cut it. Then I end up with my hair up to my jaw line. That is way too short for me. So now I'm letting it grow to my butt. I'm beginning to rethink this as its a pain to deal with. I lean on it in my sleep, when I'm sitting in my chair, and any other time you can think of. I have a hairdresser who won't cut it until its at my butt. If I go to someone else I'd feel like I was cheating on her.