I guess this is the craziest part of your vow I don't understand. There's lots of incentives to stay at any of the combined hotels if you're an elite member. The merger gives the "new combined company" a much larger footprint worldwide. So if you're in a town where your choices are a Four Points or a Renaissance, you'd choose the Four Points every time? Even more likely in the US, there's a Marriott in the perfect location but not a SPG brand. So you'd book IHG or Hilton or whatever?

I don't see any logic in that, and I guess I don't understand the emotion. It's like saying I like all whiskeys better than any beer, but if they don't have my favorite whiskey then I'll have a beer.

The merger is a done deal. You can take advantage of it or pretend it never happened if you want, but it's your loss.