Andrew, you are as bad an influence as everyone else 
I don't mean to be!! Lol

I came from a time where I did start out shooting film, but AF was the norm. I quickly transitioned to digital where manual focus was almost unheard of.
Once I got myself past the desire to only shoot fast paced, "get the shot, get it out the door", I realized that not only do I love creating photographs, but I also am in love with the process of taking them.
Like anything you love, there should be time to reflect in it, show down, enjoy, appreciate.
Manual focus lenses do that for me. They have their time and place.
I've also found that the older lenses have a more organic quality to them that I find pleasing. The modern lenses are fantastic. So fantastic that they can be extremely sharp and at times almost clinically perfect.
I've often been drawn to the concept that true perfection does not really exist here in our existence and we are to strive to always try and get there. It is the imperfect that I love to show, especially when you can show the uniqueness and beauty in it.
These gems of lenses are so inexpensive now, and I'm fortunate to have a local camera store that still deals on them and gets refreshed stock from time to time. My only real regret is that my photographic maturity took so long to get here that I missed YEARS of shooting manual focus. Maybe now, I'm trying to play catch up!