Unmarried women, help me understand your choice

I am a 21 F who is career oriented. I've done well throughout my academics and will soon enter corporate. I've always been independent, ambitious and self-reliant. However, I am unable to move past the traditional idea of having a happy marriage. I would like to be child-free but somehow I think I won't be able to manage without a husband.

So I want to ask some questions to unmarried women:

  1. How do you plan on meeting your sexual needs? Would you be able to find a new partner if you split with your current partner in mid 30s ? If not a partner, how do you manage your needs for intimacy? (I understand masturbation is a thing but we also crave touch, hugs etc. right?
  2. Have you considered loneliness that would come after your parents die? What's your back up for that?
  3. Would you miss having someone to make plans with on weekends if you're single?

I would like to get out of my needy mindset that's why I wanna know this.