In which way does the Macbook Pro look old?Your post goes against the design curve of EVERY product in history - thankfully. Imagine us still driving around in Model T's or still using the rotary phone? It might not be this next update, but very soon the current interface and look of the MBP will feel truly dated. The writing is on the iPhone.
As for "years to come" - for someone like you there will always be an antique MBP on sale in the world of eBay so you won't have to be affected as great technological advances are made. There are of course people that still drive around in Model T's and play 78 LP's.
PS If you want to be nostalgic about Apple design, the old (8 years ago) Pismo Powerbook was much more ergonomically shaped than the PB's and MBP's that subsequently replaced it.
It looks light years ahead of any PC laptop on the market, so how does it look old?