I see both sides of the coin on this one. I'm a similar age to your T and I'm a T in training. I do have quite a range of life experience and haven't felt any issues working with clients of a variety of ages and backgrounds. Conversely, a fellow trainee in her late 40s expressed concern about her lack of life experience, in that she has no children, has worked the same job for years and hasn't really had any major life troubles. So I don't think age is the be all and end all.
That said, my therapist is 30 years older than me and I am happy with that age gap. Part of that is due to his professional experience (which makes him a lot more secure about holding my attachment) and part is due to having some parental transference to work through. I had an older therapist before who was recently qualified, and I found it was the professional experience, not the life experience that made the difference for me.