"College (despite having scholarships and financial aid, I needed to support myself). I got my first official job at 15 to help pay for college and move out. My parents refused to support me financially and I desperately wanted to move away as soon as I graduated from high school."
ImaginaryOwls
Sure, I could afford to just buy it, but I decided to pay for this one outside my regular budget, so I set aside some money each month for a while. Just as I had enough set aside it became available and with a discount, so I'll probably get the kit to put lights in it as well.
I'll "set money aside monthly" more when I want something though; getting something you want feels better when you have saved up for it over time rather than just having enough money after bills to simply buy it.