Should I still crate my puppy even if he resists going in?

Asking again because the last one didn't really give me a clear answer.

I know you're not supposed to force your dog into the crate as it builds negative association. However, apparently you're supposed to crate your dog from day 1 to start building the habit early on.

My puppy is 15 weeks old and I've had him 3 days. Several times a day I've been trying to make him like the crate (feeding him in there, special toys, etc). However, he still does not like to go in the crate.

Do I still crate him even though he's fighting me, or do I wait until he goes in the crate willingly? If your advice is to wait, what should I do with him at night?