The only thing that gets "better" is the fact that at a certain age, you more or less accept your lot in life. You're able to let go of that false hope and angst that drove you crazy when you were younger.
Everything else gets worse. Health goes downhill, you really start noticing and feeling the effects of aging, you have way less energy and get tired more easily, cognitive decline (this isn't something that happens suddenly happens when you turn 70), social opportunities are nonexistent for older men, and at a certain point you realize that the world you grew up in no longer exists.