I really do not vote up for own questions, own answers and own everything else where voting or any kind of a counted positive commenting is applicable. Theoretically, given that I won't rethink my personal attitude against self-voting, and no more answers than my own -- to own question(s) -- will be provided, this can lead to a question (e.g. How to apply alternate row coloring in a longtable in LyX?) which will never receive an accepted answer!
Of course, this is unlikely to happen for questions of high importance that concern a lot of people. But does this really matter? What about questions that won't gain much attention?
I do think that all usefully answered questions, should be paired with accepted answers. This, however, is not a strong(er) argument for me to re-think my skepsis about not voting up for own posts.
Would it be useful to give-away my voting right in this occasion to others? Maybe a mechanism could be activated and automatically accept an own answer to own question, if, this (own) answer has received some(?) votes by high-rep users (--who is considered a high-rep user anyway?) or committed tex.se users that have earned specific badges.