Just didn't have enough to say to pay all that for a big-ass server. GitHub mobile app means I can update my site while sitting in conferences listening to boring rehash speeches.
Can you define "big-ass"? You'd be amazed what you can do on a $5/mo VPS.
Indeed, although if your personal situation involves "sitting in conferences listening to boring rehash speeches", as the OP stated, it's likely that $70 per year is effectively little more than a rounding error on your annual expenditure.