For me it was buying a computer from newegg but I confess I'm not playing in the same league.

What was the benefit to you over using USD? (actually wondering)

1. Get rid of the few mBTC I had left after I realized how bad I'm at crypto trading

2. Fully live the concept of buying something physical from a virtual money I got by mining some now defunct coins.

i.e. No real benefit. And maybe a small drawback of increased transaction fees.