Gosh, your age isn't an issue (except some of us older types envy your reflexes and spontaneity). Nor are we implying you aren't a good and sober driver - I just used one example that the unexpected happens, occasionally with major consequences, to all of us.
I think we are just saying that an MB can probably take the abuse more than most other vehicles, but all machinery wears faster with hard work. When we are younger we tend to work machinery harder than when we are older, for a variety of reasons. Not trying to put you down, just trying to answer your question by saying you should enjoy your ride in the way that is best for you, and be prepared to fix what breaks, mechanical or otherwise.
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E