How to take "similar experience".... Yes, I had "relations" with my father from around the age of 4 or 5 (just when I was finally and reliably dry 24/7) until probably around age 9. It was, shall I say, "less that mutually beneficial."
Okay, I'll stop beating around the bush. He was an alcoholic and a fillanderer that my mother didn't finally kick out until I was about 14. If he hadn';t gotten a hooker that day, or pressured one of the people he was supervising into doing something sexual, he'd come into my room after he finally came too (he'd pass out on the sofa after dinner and not wake up until 1 or 2 am) and use me as a "warm hole". No thought or consideration was ever given for my health and safety, let alone enjoyment. On more than one occassion I woke up needing medical attention which my mom would take care of and then conveniently never get the tests done or schedule the follow-up appointment in those days before mandatory reporting.
I was raped, repeatedly, and made to think that the only way I had in life to earn the right to breath, was to let others use my body whenever, wherever and however they wanted. A foundational belief I continue to strugle with 4 decades later.
Which is not to say I haven't longed on SO many levels for things to have gone differently. To have been loved, cared for and about, and taught the joys of mutual pleasure as I was physically able to handle them. In fact, that's still the main line of fantasy when I masturbate today. Though there is a strong second place fantasy of being able to take a young boy out of a bad situation, give him a better life, and as he shows interest, teach him how to express love in all it's varied ways.
ymmv
PS: I'm jelly of you and Tony!