If he is dangerous aggressive, does that mean he is good? if so, I see no need to raise. He's going to push back with any strong hand, and fold the weakest hands possibly including some of draws we share. Here are some situations:

1) He has a monster. If we raise, he pushes back and we may be forced to call, or fold giving up equity. If we just call, we get his stack in many cases as his hand is big. Our implied odds are huge in this spot, I do not want to destroy them by raising in this spot.

2) He has a monster draw. This is the best situation for raising as we have the best hand in this situation, but it is also unlikely as we have 2 spades.

3) He has a weak hand. Raising gets him to fold. We win a small pot with the worst hand, and risk getting raised off the pot. But if we just call we may still be able to take the pot away on the turn when he slows down or a scare card hits.