I am 30 and finance all big purchases with 0% interest. Never paid a dime of interest in my life and have 800+ credit rating.
I love credit and manage it well.
That being said I would never buy a $3,000 computer without financing.
I just financed a new iMac, mini and Air and will pay them off before I am charged any interest. I am thinking years down the line when its time to upgrade.
Is this my first, last and only change to finance an Apple product with no interest.