Not sad at all mate, brand loyalty is sooo much more common than anyone thinks, we are all creatures of habit! We shop at the same supermarket, listen to the same music, drink the same drinks, so buying a car from a brand you feel comfortable with is just natural.
You know most vauxhalls will be fairly cheap to run and maintain, dealers are widespread and there (hopefully!) won't be any nasty surprises.
Though I would say, when the new Vauxhall Insignia comes out I think there will be nice number of used vectras coming onto the market. Not to mention the fact that there are already a nice few veccys which are traded as fleet cars, have covered all motorway mileages and have followed correct service schedules, not skimped on maintainence etc.
I would also buy the best spec you can, you deserve it after having put up with a focus for so long!

The Elite vectras are fairly well specced with all the toys.
The only thing that springs to mind with the 2.2, which has been talked about on here before, there was a recall on the timing chain if you are looking at any earlier (2001?) cars, it maybe worth a quick message to Mr MarksDTM to get the lowdown on the motor in general.
Good luck
