Well, I do believe experience counts. It isn't a guarantee--there is no such thing--but when coupled with other criteria (including having done their own therapy), it bolsters the odds of competence. Do you want a mechanic who has never worked on your model of car before, or one who has? Do you want an accountant to do your taxes who is familiar with your financial profile, or a graduate of a 2 week training course? How about a surgeon--want to be her first patient? No thanks!