This is not going to help you, but I just have to say it... THAT IS SUCH A MAN THING!
I think it's an innate characteristic in MOST men to be loud. My ex was exactly the same way... he wasn't being malicious, but despite my repeated cues to do things like shutting doors, cabinets, etc. more quietly, he just never got it. And my ex's mother says that his dad was the exact same way. My dad does it too. Coughs outside the door of my sleeping son. Sorry, but you just might not win this one. I do certainly feel that it's a rather simple request, and with very little effort, your request could be met, but they have to see it as a problem too, which it seems they don't.
You could try kind of playfully, but with serious intention, placing signs on all of the culprit areas...
On the cabinets - PLEASE CLOSE CABINET QUIETLY
On the closets - PLEASE GENTLY CLOSE CLOSET DOOR
On the door - PLEASE USE KNOB TO QUIETLY CLOSE DOOR
You get the picture... kind of make a playful joke about it, but it will be a good reminder... And tell him that if he complies, he gets a reward... and maybe give him a little "extra attention" if he does a good job. YES, I am suggesting you treat him like a child, because unfortunately, sometimes that's how our men behave, so that's how we have to respond! lol
Good luck to you... I know how freaking annoying and disrupting that behavior is!!!
Oh, and by the way, your son sleeping with you is only a problem IF its a problem for YOU! Co-sleeping with our kids is a completely natural, wonderful, loving experience for us and our kids. :)