You confuse mortal limits with psychic limits. Sure death is the final limit of all beings, but that is no reason to restrict yourself in life. My attention span is more than enough for one lifetime.
You are correct in that constant change is not change at all; therein lies the contradiction that is myself; dedication to change, contentment in consistency. I would recommend to anyone reading a book called The Sacred and the Profane (the author's name escapes me and I am not at home to look [I am actually at work, being paid to have this great conversation with you; one of life's small victories]). The subject is religion; why men dedicate themselves to the power of immortal ideas because nothing can last in the unfounded, chaotic, irreversible flowing "profane" universe. I suppose it is this profanity which enthralls me. Maybe I am truly an evil person? I actually play music and take my compositions more seriosuly than I take interpersonal relationships. I also draw pictures and find some joy in the art, though I do not like to let people look at them. There is beauty to me in the things that I create, but if they could not be destroyed by ultimately unstoppable entropy (chaos), then there would be no beauty in its existence. You actually understand perfectly I think; what you are saying is exactly what I mean.