bicycles
It's like how you learn to ride a bike. You get on and there's be a hand helping you balance. It feels like your own little trip to the moon. You're really just a few pedals away from anywhere.
But of course, before all that, you learn how to fall on your sorry ass. And how to get up again.
And then, sooner or later, you'll be able to leave the hand behind.
But you never wonder how the damn bike works. It doesn't need to make sense. You just want to pedal away, without wondering about chains and nuts and wheels. All you know is that it's supposed to take you away and obey your legs as they push further and further, till you miss what you've left behind.
And that's when it'll screw you over. It breaks down innocently enough. And you start wondering how it works and how to fix it. A little groove here, a piece of metal there. And then it all makes sense!
At that point of realisation, it's too late. You're gonna have to push the bugger home, and when you eventually do, you'll see that what you left behind have in turn, left you. Gone because you did first. But before you know all that, on the slow walk home, you're thinking that you'd rather it not make any sense.