Okay men are very much like a lawnmower (hopefully the women will get this reference).
You buy them new and they start right up and run strong. The problem is they don't know the yard at all and run out of gas WAY TOO QUICKLY.
As they get older, they take a little bit more work to get running, you want to choke them sometimes, but once running they run hard like when they were new (young) and know the yard pretty well. This is the sweet spot of stages.
As they get even older, they sputter, as in they run hard for a while, then their revs go down, then back up, then down, sometimes stalling requiring you to do all the start up procedures again. The bad part is the inconsistency which if you work with you get the benefit that they don't run out of gas as quickly

, but unfortunately as you have them longer, you want to choke them all the time. But they can still "mow the lawn" really well, and they really know the layout of the yard at this stage so in that way they're a lot less maintenance and if you can look past the inconsistent engine, they're actually the best performing overall at this stage.
Finally near the end of their lives, they don't turn over, choking them doesn't even work, they can't mow any longer, but you've had them for so long that you're really attached to them. To mow the lawn you have to use the lawnmower attachments.
Seriously though ladies, if your man has aged you can't take him LOSING an erection personally. If you think it bothers YOU?!?! It bothers him 100 times as badly. He knows he's not a spring chicken any longer and he's "lost a step" and now there's nothing he'd rather do than to please you and he can't to the level he wants (and that he used to be able to if he still had his body of youth). If he got hard in the first place, take that as your sign of how he feels about you. Him losing an erection is 100% physical as men get older and there's NOTHING he or you can do about it (unless he's medicating with little blue pills).