So at most you're 33 and at least you're 23?
It just seems a little unusual to be that sort of age and writing about children's cartoons such as Phineas and Ferb, in my opinion at least.
Have you ever considered using the writing skills you clearly have and creating something a little more adult-orientated, perhaps not involving characters from children's cartoons?
You would probably find this would increase your readership a little and generate some feedback, since we all like to have comments about our work and you seem to have none.
I can't really see that a Star Trek fan fiction board is in any way suited to Phineas and Ferb fanfic, could there be other forums that are home to people who wish to read it and give you feedback?
Although as long as you're happy then don't let me stop you, it just seems a little sad that you're putting a lot of work into these stories and it is apparently going completely unnoticed.