Am actually being objective here - that is its main purpose by design.

Same story with the broken spear halves for the [Vision Of The Absolute] or the icy staff pieces for the [Mourning Frost]. People can absolutely do whatever they wish with the junk pieces, but the primary purpose of these pieces is to create unique weapons.

The Owlbear Egg is a quest item directly tied to Lae'zel becoming a mommy; its primary purpose to be used so the player can peacefully complete the quest without killing Lady Esther, angering Lae'zel and massacring the Society Of Brilliance in ACT III.

What people do with the egg is entirely up to them, but players hoping to achieve this outcome end up having their choice entirely stolen away from under them, because they don't even notice it's gone until it's too late. An important quest item that keeps getting randomly consumed and therefore locking people out of their outcome necessary for a paragon playthrough.

I had no choice but to give Lady Esther the Githyanki egg to complete the quest and then immediately steal it back. I am now stuck with my journal saying I gave her the hatchling and Lae'zel got pissed off at me, telling me to take it back despite already having done so. Got no clue if she can even hatch it anymore, which is something I want for her in this paragon playthrough.

This whole mess just because the stupid egg is a quest item posing as useless food. But yes... the irony did not escape me that the Mother ate the cub's brother and now the cub ate its own baby brother.