I do not agree!
The cost for a synthetic oil change is fairly pricey. Dealership or mobil 1 change for my car would be at least 80. Me doing it, is around 40 (ish) if I use mobil 1. I don't use mobil 1.

7 quarts + filter is around 30 bucks but my car takes about 6.25 so typically an oil change is 6 quarts @ around 25 dollars (and using what I got left over from a previous).
I use the supertech walmart synthetic stuff (5 quarts at 18-20) which runs good in my car and degrades slower than mobil 1 in my opinion. I think it was quaker state at one time but I don't think it is now, I can't remember who makes it but it's not a branded mfg.
If you're driving a vette, ferrari, or porsche, sure use mobil 1 but if you let changes slide longer than 3 months could be a bad idea. It starts looking real skeezy (chocolatey) at the 3 month mark in my car. Of course, it's just a personal thing but you're driving mobil 1 in a wrx sti (or anything that produces a ton of heat, i.e. forced induction) for more than 3 months it's probably doing damage to internals.
Any mobil guys got something to say about this?