Picking up on a couple of thoughts:
suffering/death is "enjoyed" not in itself but as the other face of joy/life etc.
you forget about the suffering part because it leads to something good
That's exactly what masochism is! In fact, the primary definition involves the derivation of sexual pleasure from physical pain.
It's the "translation" of pain into pleasure, for whatever reason, that strikes me (now, though for a long time it didn't) as being abnormal. The Scriptures are replete with similar examples, and the WTS literature is permeated with the same, especially during the War years and after periods of major apostasy. In not so many words, it's a matter of "If you aren't suffering, you're not a Christian."