Retiring? Good points by all. CK hit the nail on the head. Retire when its no longer fun. Applies to provider and hobbyist.
You can also get forced retirement, if it becomes so much work that the skills and attitude go away, then so do the clients.
Although, as the sexy and talented Ze said, " In the end, there will always be someone willing to pay if you are willing to sell."
This is true, but if you have relied on a certain number of clients a week or month to get you where you need to be things need to change.
I don't believe in announcing retirement, so many do, and so many return, the hobby is addicting for both client and provider.
I know several providers who have moved on, and some I'm still friends with (just friends), some found love, some completed school and went on to better things, some took what they had and started businesses, and some just disappeared.
The only one that tell you when its time to give up on the hobby is YOU.
Felicity you are a sexy smart lady and you will find the right time, and I'm sure the hard cock you need on a daily basis. (lucky guy)
Ze your pic is lovely and sexy as ever, you are a real treat.
The hobby is just a brief part of life, enjoy it, use it as you like, and when your done with it, just walk away with some amazing memories.