Oh HP your son is crying out. He needs your to be his rock. You have gotten great advice here. Listen to it. Life if short. You hold the key to your happiness and future. Plan a bucket list for you and your son.
You cannot keep blaming your wife for your unhappiness. I'm sure she gave you many waring signs that she was frustrated and unhappy. Be the best man you can be. If it's not her then in time you will find love again.
It's ok to be on your own. Cheers
Me 52 H 44 T9 M 5 BD 12/11 H split 8/12 OW moved in 12/12 OW gone for good 6/14 We get closer again 9/14 SD 13 Me 4 Grown
Accept what is...let go of what was and have faith in what will be.