[Maédhros]

So you think Eru forbides men from entering Aman because they will rebel against the very gift that he made for them? Would this make sense? Why give the gift it will cause turmoil?

From Morgoth's Ring: Aman and Mortal Men

To the Númenóreans they said that they did so because Eru had forbidden to admit Men to the Blessed Realm; and they declared also that Men would not there be blessed (as they imagined) but accursed, and would ‘wither even as a moth in a flame to bright’.

Of course, if your argument is that jealousy of immortality would be what would lead to revolt, Earendil wouldn't matter very much, since he was granted immortality. But, as Orofacion points out, that would all depend on their wisdom and their ability to understand mortality (very difficult; nobody seems to understand it in the Sil).

Speaking of Men in Aman

But in Aman such a creature would be a fleeting thing, the most swift-passing of all beasts. For his whole life would last little more than one half-year, and while all other living creatures would seem to him hardly to change, but to remain steadfast in life and joy with hope of endless years undimmed, he would rise and pass – even as upon Earth the grass may rise in spring and wither ere the winter. Then he would become filled with envy, deeming himself a victim of injustice, denied the graces given to all other things. He would not value what he had, but feeling that he was among the least and most despised of all creatures, he would grow soon to contemn his manhood, and hate those more richly endowed. He would not escape the fear and sorrow of his swift mortality that is his lot upon Earth, in Arda Marred, but would be burdened by it unbearably to the loss of all delight.

They would be jealous of them regardless. Maybe few individuals would accept it, but not the majority.