I hear ya. i used to think that way, as well. But, Marvel doesn't. They clearly either, (a) don't care that they may be destroying the MU, or, more likely, (b) don't care what you (the reader) thinks up until such point as it dramatically negatively affects what they make. And since Marvel is a mega-conglomeration, who sells comics, movies, characters, advertising, towels, sheets, pillowcases, bedspreads, blankets, t-shirts, socks, underwear, etc etc etc...I doubt that merely a few people refusing to buy their comics will cause any of them to get a less-than-perfect sleep tonight, or any other night. In their mattresses stuffed full of money, I might add.
If the readers don't like it, then they should go elsewhere. That won't fix Marvel, but at least it'll make the readers go somewhere else and hopefully find happiness there.
Sorry if I sound bitter; just calling it like i see it, tho.
There are a million comic book characters in the sea, and Marvel only owns a fraction. Find another character(s) you like, elsewhere, and then you won't have to deal with Marvel. And, yes, I am taking my own advice, and am inching toward that time in my own reading; one day soon i'll get there.