Playing racing games on PC.
At first, it's just a few racing games with an Xbox controller.
Then it get more complicated with the more advanced racing sim/arcade and the controller isn't enough anymore.
Then come a simple wheel and pedals set.
But now the games is way more enjoyable, then up the difficulty.
Now I need gear shifter, hand brake, better monitor, better PC.
Then not long until I need a full racing cockpit to mount everything on.
And now, after all that is just the beginning.