Some Random Questions

1.  You know, I notice that my conlangs tend to peter out quickly -- none
of them seem to grab my interest, although I have this idea of a perfect
conlang that perfectly expresses my artistic vision. . . okay, I guess
that was more of a comment.

2.  How do you handle irregularity?  I know this has popped up before, but
I'm still not sure.  For instance, do you always make the verbs of being
irregular?  The personal pronouns?  Or do you just let irregularities
evolve?

3.  How unnatural is it to have only one class of noun declensions?
(Well, now that I think of it, I guess English only has one real class of
noun declensions -- of regular nouns, anyway)  Or only one of verb
declensions?