I will play. Pushing 50 in a few weeks and not ready to stop yet, so certainly spend a lot of time on my fully rigid vintage bikes. Sometimes I want to go a different direction and just take it easy. I could see how the late 80's early 90's bikes with their steep angles and flat bars aren't to conductive if one had a sore neck or back.
Friendly angles, riser bars, big tires, granny gear, not too heavy, I use this when I feel old and want a little cush:
And if I feel like maintaining my vintage pride but still seek a little modern love, I take out this little jewel:
Keeping things era correct and vintage, believe it or not, this bike is very comfy for all day adventures also:
There you go: Comfy Turner, A WTB Phoenix with modern suspension, brakes, and a riser bar, and a dirt drop Ritchey which was my go to most comfortable bike while my neck recovered from a recent injury.
Seek: Cunningham, Koski Trailmaster, Breezer Series II or III, Early Ibis Custom.