I'm gonna disagree here. We are talking about recreational flying...

Everybody is entitled to have some fun, whatever they want it to be. If you don't have a family yet there's nothing that wrong with spending all of your money on fun (although I would recommend investing a portion of your income while young...it goes a lot further at that age).

I think recreational flying is within a reasonable cost bracket for the typical young working professional...it's near the upper end so you might have to budget your other activities while training, but it's doable without going into debt.