Depends on the people invlolved. Don't make your choice because of the other person.
If they become impatient and push it, or dump someone over it, then good riddance. (Well, maybe not good, but is the goal sexual relationships, or deeper ones?)
While, I personally believe, it's ok to be selfish about what you want, I don't think it's always right to be pushy, or pushed for it. There should be some level of respect for your (perspective) partner.