There is no reason now to overemphasize this matter. Our good God will certainly provide amply for our true needs if we are "counted worthy of gaining that system of things."
OMG! Knock me over with a feather. I totally don't remember this doctrine and am shocked. They're withholding marriage and sex from themselves now, only to probably not have it in "paradise"! It's surprising anyone sticks around. Maybe they should surgically remove everyone's glands and sex organs so as to remove sex desire altogether, so god has to only provide for our "true needs".
Joseph and Mary will evidently live in different realms—he on earth and she in heaven.
LOL @ the stupid distinctions they make between who gets to go to heaven and who doesn't.