Choosing an operating system is kinda like buying a car.
When you get a Mac, you walk into Toyota dealership and say "Ooo, that one looks nice." And they say "good choice. Do you want it with 4, 6, or 8 cylinders? Stick-shift or auto?" You say which, pay your money, and leave. You're pretty happy with it until a new one comes out in six months, but in the meantime you're confused by the steering 'wheels' on other cars.
With Windows, you spend a lot of time fiddling and debating and comparing Ford to GM, and the various options, and eventually you decide on one with 75% of the options, an entertainment system you can only use half of, 18 cupholders and two seats.
Using Ubuntu is like deciding "Hey, I need a car," so you go on craigslist and spot a car that looks good and it's in your price range. You end up getting it, and it does 93% of what you want it to do, but sometimes you have to turn left three times before you can change the channel on the radio and it has to be in reverse to open the trunk.
Using arch Linux is like saying "Well, I should get a car," so the first thing you weld together a frame and then you go down to NAPA for a couple of pistons...