No, there’s nothing wrong with eggs, per se. However, not everybody can eat eggs and there are also times when you might need to substitute for them.
Yep. Sometimes eggs bother me, and sometimes they don’t, so I like to sub them out when I can and save them for when I feel like having just eggs (breakfast). Plus, the egg replacer I have lasts forever and is non-perishable. Oh, and when you bake with a sub, the bowl is always safe to lick!