It'll still probably take you a good 40+ hours to do that. Which is fantastic entertainment value for $30.
Looking at the steam global achievements, 16.1% of people have finished the game at all (mid-game achievements are sitting around ~40-50%). There's then 2 other achievements - finish the game in under 15 hours, and finish the game in under 8 hours. Only 2.1% and 1.6% have those achievements, respectively.
I'm also a "finish the game & put it down forever" type of person, but I've come back to Factorio multiple times. Helped tremendously by the map generator settings letting you basically "skip" parts of the game you don't like, or double-down on ones you do like. Enjoyed the trains? Make the ore patches more spread out, but larger so that your train installs are both more necessary and are more permanent. Enjoy being forced to improvise base layouts? Ramp up the cliff generator. Hate cliffs? Disable them. Feeling stressed from the external pressure that enemies provide? Disable them. Etc...
Factorio is half the price for more hours of entertainment, even if you never touch it again after your first rocket launch (assuming you do enjoy it until the first rocket launch and don't put it away before then).
A minority of players (like me) likes to continue expanding and optimizing after the first rocket launch, but indeed most people go play something else first and start another map later, perhaps with friends. On your second run, you'll build a much better factory. Not necessarily because you like optimizing so much, but now that you know the game you can do things much better and most people enjoy seeing that they really made progress in learning how to play a game.