I think you’re kind of ignoring the current reality by bringing up practices that were discontinued about 120 years ago. [Texan Tory]
Well, it's obvious, Texan Tory, that you're either 100% ignorant or are just intentionally ignoring two facts:
(a) In his book, Mormon Doctrine, LDS apostle Bruce R. McConkie stated in 1966 that polygamy is a "holy practice" and that this "holy practice...will commence again after the Second Coming of the Son of Man and the ushering of the millennium." (Mormon Doctrine, p. 578)
So, the "discontinuance" you reference would itself be "discontinued" tomorrow if the Mormon version of Jesus returned tomorrow.
(b) Mormons believe marriage is forever; so every past polygamist has simply shifted over to a different colony to live (beyond the veil). Furthermore, every serial monogamist -- according to Mormon thought -- becomes an eternal polygamist, provided that he or she was "temple worthy" when they died and provided those unions were recorded in the temple as "for eternity".
“it’s obvious, Texan Tory, that you’re either 100% ignorant or are just intentionally ignoring two facts”
Ouch. Well, I’m not 100% ignorant, so that leaves us with that other thing you said about ignoring facts. I don’t think that all of the writings of Bruce R. McConkie are accepted as official church doctrine, even though he was an apostle. I will concede that your other point is correct, so that if a Mormon man marries, is widowed, then marries again, he will be considered to be married to both of these women once he dies and enters into the afterlife.
Regardless of Mormon doctrine regarding marital arrangements in the afterlife, Mormons, in terms of actual real-world religious practices, have been devout practitioners of traditional, monogamous marriage since their involvement with polygamy ended about 120 years, and they have fairly good statistics (lower divorce than average) demonstrating their committment to traditional marriage.