Not sure if inhibitions go out the window, but you figure out what you want more as you get older and have a lot more mistakes to learn from.
As for playing hard to get - that's all very well if you happen to be one of those people who has several chasing them, but it's really not recommended at any age if you genuinely like that person.
And with regards "getting laid" - it's nor exactly easy at any age, but to go further than Steve - sex overall is the most overrated thing in history...! We only really do it because our hormones tell us to, pretty much like the rest of the animal kingdom.
I'm guessing you're wondering if the rumours about sex being a young persons game are true. Well....from the 40 year olds I've slept with, I'd say no, they just demand more than lay back and think of England. :)