Husband wants kids, I don't

Need logical advice. Long story shortish: my husband had kids when he was a teen, his kids are 18 and 14 now. He is 36. Well, he we have been together since I was 18. Moved in to the house apartment above his condo and we hit it off. At first no ages were actually discussed we just both assumed I was older and he was younger. We have been together for 6 years which it has been severely fun, romantic, and overall very healthy. We are perfect for eachother. I don't feel like I “missed out” cause I got emancipated when I was 15 by the grace of God thank goodness, but I lived on my own paying bills and going to work full time and going to online school at night full time. Plus whored around a little bit living adult life once when i got my license when I turned 16 I went everywhere with no regrets. Anyways, never in my entire life have I wanted kids. Not even as a child, I didn't like playing house, my barbies and pollys didn't have kids, I don't want any. I did tell him that and he was accepting of it. He still is. But the problem now is that his kids are mostly grown up and he keeps bringing up the kids thing. Does the “what if we have a kid” and “our kid would be perfect” “our child would be beautiful since you're so beautiful” “ you would make a terrific mom” etc etc list goes on. He always slides it in the conversation when we watch family movies or have a date night out once in a while. At least once a month he will Bring it up, pretty much since I was at the age of 20. Well, I'm 24 now and still feel very strongly about not wanting kids. He's 36 turning 37 next month. I told him it's still too soon for me, I can't imagine having my life 360ed, I don't want the challenging job as being a mother. I like my life. LOVE my life. We established a successful business, we own two houses, we are looking into a vacation home out of the country(a trailer on land ideally something cheap). Idk I just don't want a kid. And he really really wants another one and says we can get a nanny but I wouldnt want someone else raising our kid. I told him if he feels like he is settling that he shouldn't be with me because he deserves to not settle. He says he isn't settling, that I'm his dream girl, that kids aren't important... but still brings it up. I'm starting to feel immense guilt over it. I don't want to give up riding my horse or riding my quad. I don't want to give up my skydiving during the summer or traveling without having to find a sitter or bringing the kid. essentially I just want to live my life. If I had a kid I couldn't do those things because I couldn't risk my life like that when there's a little human relying on me to come home. And I'm just.... sad... guilty.. I have that instinct, I love kids, but still doesn't change my mind. I want to be on bc but he is highly against bc(he's a physician and says the science behind bc being dangerous is there) but he won't get a vasectomy and I can't find a Dr to tie my tubes. I'm feeling really lost over it. And I'm getting a breast augmentation to fix my crazy misshaped boobs and thats 7k, milk would destroy them so getting them would be ridiculous if I had a kid. Personally I'd rather have confidence and independence. Idk.