I think my anterior delts needs the stretching, my shoulders have a tendency to slouch forward, I've always stretched the pecs, etc, but never really stretched the delts consistently.
How are my shoulders, do you mean like their health? They are not 100% (never have been, I don't think ) but as long as I stay away from what hurts it's not a problem. I thinkg my left shoulder is the problem shoulders. If I abduct the humerus 90 degrees and do external rotation there's a lot of cracking going on in there
I wonder if these are related issues. What are you doing for upper back? A lot of times, most people stick with pec exercises plus lat exercises, and those are major internal rotators, which will cause that forward slouch. Simple modifications can be made to pulling exercises, or even focusing on incline presses can help.