Who are these people telling you that you should be wanting friends? Because if you don’t have any friends, what does it matter what random strangers are telling you? Same for us on here really!
Whilst I do find it unusual that you want a partner but don’t want friends, it’s your choice to make. I’m curious as to why though (I’d find it easier to understand if you didn’t want a partner or friends) and would love to hear your thoughts on this if you’re prepared to share.
I know it’s a bit of a trope, but are you ND? I am on the pathway for diagnosis at the minute and I’ve always struggled with friendships. But for me it was more around me thinking everyone was my friend, even if I’d only just met them! If you are ND, it could just be that your brain is wired differently, so you don’t get the dopamine reward from friendships that others do. I suspect anyone that didn’t feel good from a friendship would be less inclined to want them - they can be hard work! How many times do you see it on here where an OP asks about something a friend has or hasn’t done, and everyone replies asking them what exactly do they get out of the friendship or tell them it’s clearly run its course? That tells me it’s not uncommon at all for people to not be bothered about a friendship where they aren’t getting something out of it in some way.
So don’t worry that you’re weird or whatever. Only you can know if you are truly happy without friends, and the good thing about friendships is you can form them at any point in your life - so if you change your mind when you get to your retirement years, you can find friends then. For now, you do you. As long as you don’t expect your partner not to have any friends too, and don’t make them feel guilty for wanting to spend time with their friends, I think you’re good.