It's good to purchase things that you enjoy
Allison has been bored lately and is interested in learning an instrument.
Allison wants to buy music equipment.
Allison decides on a guitar, which is her favorite instrument, and places the order.
Allison see's a deal on a banjo, which isn't her favorite instrument, but she buys it regardless.
Allison is in love with the sound and has motivation to practice daily.
Allison hates the way it sounds and isn't motivated to learn.