Should you invite your ex to your wedding?

This is a sticky topic to some and to others is a no-brainer question... 
Should you invite your ex?


For a "yes" and the reasons:
  * You are friends
  * Having a children together.
  * Wants your ex to witness how happy you are.
  * If your ex also invited you at their wedding.


With a "no":
  * Do not invite them for revenge. 
  * They maybe cause of gossip or worst... a drama.
  * Even if you are friends, do not invite if your future husband/wife is uncomfortable.


Now, upon giving some pointers to ponder before you invite your ex, will you? or   a big no?