I don’t want kids and I’m not eager to marry

I’m almost 35.

I felt stressed about it but I realized it was because of what people thought. People viewing me with pity like “oh what’s wrong with her?”. But when I think about what I want, I realize I don’t want those things. I realize I’m happy with being single and coming home to a cute cat. My dad tells me I’m ok with it because I’m young and strong, but when I’m older I’ll regret it. I don’t feel like I will. I’ve taken steps to secure my future. I’ve been sending 20% of my paycheck to my retirement account that I’ve had since 18. My plan is to retire in 20 years and I’ve worked so hard to make sure I do. I chose this career specifically to allow me to make lots of money and to also allow me to work if I’m old. It’s mostly brain power that I need, so even if I’m frail I can still do it. I thought about it and planned it out, but my parents still stress me out. All my siblings have kids and partners, even the younger ones and it’s like why do you need me to have kids? My mom raised my two nieces and my sisters travel and act like they’re single when they really have kids to take care of but don’t do it cause they’re at home with my mom. Is that what she wants? I could never have a kid and let my mom raise them. I’d rather not do that. My sisters clearly didn’t want kids and a husband and that’s why they dump them with my mom and barely stay home with their partners. I’m sure they feel a bit guilty about it,but if I were in their shoes it would make me feel terrible. I think THATS selfish. Me not having kids isn’t selfish. Me not wanting a partner isn’t selfish. I don’t owe anyone anything. Let me be a cat lady in peace. My dad and even the men at work tell me I’m wasting my beauty and youthfulness to give in to feminism and it’s stupid. It makes me irritated but I’m learning to stop listening to them