Of course it does. It ends either when you start getting into your 30"s when your drive slows down, or when you"ve had a steady piece for many years.
I"ll be 30 next month, wife is a few months younger than me, we"ve been married for 10 years. I could go without sex for a few weeks no problem these days, and generally I"m not even thinking about it. Could be RL stress getting in the way, but as you age, not that big of a deal. Might be the age factor weighing in on things, might be the fact that I"ve had sex conservatively maybe 1000 times. could possibly be the kid I guess, but that part of the drive does slow down eventually. There will come a time when things are just more important than busting a nut, and if you"re lucky, you"ll realize how easy guys have it in that regard. If you really need it, you can make it happen pretty quickly.
I contend this has little to do with age. I"ve met people in their 40"s who have no clue what the fuck they"re doing with life. There is that whole time honored "Mental maturity" stuff that gets bandied about that fits more appropriately. What"s really more important is that you need to know how to deal with someone for 24 hours a day, 7 days a week, for an extended period of time. Yeah, life is fucking great when you can get up and go home when things get rough, but that option is out the window when you get married. Some people are incapable of losing an argument, or conducting themselves in a civil manner when emotions are involved, and THAT"s what leads to marriage breakup. People don"t talk to each other about their problems and their needs, then one of them starts fucking someone else, then they stop talking entirely, then one of them comes home to find new locks on the door and their shit in the driveway.
It has less to do with actual age than it has to do with the ability to get over petty bullshit like jealous, trust and control issues and whatnot. Yes, your spouse will have friends of the opposite sex. Time to get the fuck over it. If they can"t be trusted, they shouldn"t be your spouse. Yes, your spouse wants to go do things without you. They want to go to the movies or watch football or what the fuck ever. YOU NEED TO LET THEM. There are people who quite simply can"t handle that, and won"t ever be able to. Frequently those problems diminish with age, but just as frequently, those problems can increase with age. I know plenty of people who say their spouse was fun when they got married, and is a complete naggy bitch now.