It’s definitely not too much trouble!
Sexual attraction and activity is so often seen as a sign of growing up and becoming mature, but sexual attraction is not what makes us grown up and mature. Your father is being very unfair. I’m really sorry to hear that he’s not able to accept that not everyone is interested in dating and the like. :(
I related to my mom that I had never experienced a sexual attraction to anyone except maybe 2 people last Christmas. My mom’s reaction was ‘I think that’s completely normal.’ (The context was that Mom believed that everyone experiences sexual attraction the same way/with the same frequency). It felt very invalidating - like I wasn’t being heard - but on further reflection, I’m pretty sure my mom is also on the ace spectrum. She barely dated in high school and college (though she did date) and has never expressed to me that she felt any interest in sleeping with those people she did date. After my mom and dad got divorced, Mom never looked to date anyone or get remarried - she was single and absolutely disinterested in an SO for about 13 years. (She is now remarried, but she fell completely backwards into even dating her current husband. It’s actually a super-cute story, anon, but beside the point, haha.) I think that my experiences with sexual attraction seem normal to my mom because she feels the same way about it!
I also related my feelings to my oldest friend, who also responded with ‘I think that’s how everybody is.’ I know that she has experienced sexual attraction to a number of boys over the years, whether she’s dated them or known them well or not. She had recently begun dating a boy she really, deeply liked, though, and had noticed the difference in her level of sexual interest in him as compared to previous boyfriends. I decided to not try to explain it to her.
When it comes to being ace, most people seem to assume that at some point that identity will change - including ace people themselves. It’s also very difficult for people to understand the experiences of others, so naturally we relate it back to ourselves and our own experiences for comparison - and many, if not most, allosexual people are not going around constantly feeling sexual attraction to everyone who is their type. I don’t think the difference between the ace spectrum and the allosexual spectrum is as pronounced as it feels, which is why so many allosexual people will respond to an ace experience with ‘I too have felt no sexual attraction at some point (subtext: because nobody I knew pinged what makes me feel sexual attraction), so you, like me, just need to find the right people (subtext: the people who make you feel sexual attraction).’ I think that’s where my friend was coming from, at least.
I’m sorry, I went a bit off on a tangent there, but I hope that helps you feel better? Not everyone will get it, but if they can respect it, that’s at least a good start. *hugs*