The answer to this question largely comes down to whether or not you have a kicker. If you do, then you should definitely try to get as close to 21 as possible before going all-in. If you don’t have a kicker, then the answer is less clear.
Generally speaking, if you have four or fewer cards, then it’s generally best to stay out of blackjack. However, if you have at least one card that’s an ace, then it’s generally worth considering going all-in.
