Congratulations on your upcoming retirement Crispy. Thanks for starting this thread it is very interesting.
I suddenly went from working long days to a busy retirement situation with foster kids. Two of the younger children have been adopted by a wonderful family and I now feel like I am really retired.
Cleaning and decluttering is progressing slowly.
On the question of will you be happy with stash - I think part depends on what type of quilts you make. I make scrap quilts so my stash is very helpful and occasionally I go to a quilt store and buy a fat quarter or two and I am satisfied with the small additions.
On productivity I find that if I sew for at least half an hour every morning it sets a nice tone to my day. I often do more sewing later in the day.
Also on productivity I joined a small sewing group last Feb and we meet twice a month. We now do one day a month at a local retreat center where we bring our machines and can sew from 9am to 9pm though no one seems to stay that long. The 2nd day we meet at someone's home and mostly do hand work. This has upped my productivity because I feel like I need to have something prepared to work on for the meetings.
I belong to Plano Guild. Plano and Dallas guilds are using
http://bestlittleretreatcenterintexas.com/ for many of their workshops. You can go on the guilds websites or the retreat center and see what upcoming classes there are and how to sign up.
The center is where my small group meets for a sit and sew day. Yes you have to pay but we don't have a home to meet in where we can all bring sewing machines. I am not affiliated with the center. My group will be there again on Dec 18th and I will be there probably from 9 am until 6 or 7 pm. If you want to come sew with us you'd be welcome.