Why don't you get up vote and downote when you join

Question

I don't get the point of having to get points for this

Answer 1

If you could vote as soon as you join, it would be ridiculously easy for spammers to spamvote themselves and others. Simply this is to prevent spamvoting.

Comments

Also just to add, all you need is one single upvote yourself to be able to gain upvote privilege.