You claim "free food and lounge" there but how much is ti really costing you? I know it isn't actually free. How much extra are you paying to stay in an HH or SPG property in China, Hong Kong, France or Germany? How much extra are you paying on your "regular" stays to get status so that you can get the "free" upgrades?

And that's before we debate the value of the "free" breakfast in the lounge versus going out and eating in the town you're visiting or having a drink at the local pub rather than insulating yourself from the experiences.

And, yes, it is easy to turn off the emails. If they aren't useful then that's probably a good idea. But if they aren't useful then why are the companies still sending them? At some point it shifts from reasonably well targeted marketing to spam. It isn't good to be in the latter category as a major company, and many travel companies are moving that direction pretty quickly.