The title says it all, but I’ll add more specifics to give a better understanding of my particular situation.
I am a on-road commuter with little-to-no dirt roads in my routes, many of the roads are VERY degraded and as such are very bumpy. My bike has 26x1.95 tires on it aired up to around 50 psi. I have no suspension other than my seat(spring) and seat stem, as well as on my handlebars. I happen to weigh approximately 225-250 lbs, if that matters. Additionally I do carry a messenger bag or backpack on most days, usually adding another 10-25 lbs. This question regards the pros and cons of the suspension seat stem and handlebars, although I’m open to extending it to other forms of suspension and other methods such as larger tires and tire softening. This is a general question but I would also like to know specifically what I should know about my bike, including upkeep and other things to keep in mind, particularly regarding the suspension I have on it.
tl;dr: I have a road bike with suspension seat stem and handlebars, I commute on degraded and bumpy paved surfaces, I weigh 225-250 lbs on average, I usually carry on-person cargo weighing approximately 10-25 lbs. What should I know about the suspension seat and stem and what other relevant information should I be informed of.