OP, you should edit your title. I guess you meant to write, "The reason..." right? Well, to the discussion at hand, I believe the bulls are already exhausted and getting ready for retirement so that the alts rally can set in. Just check the total market cap dominance and you will see that Bitcoin has been dropping since this month. I think its dominance stands at 54% now as against around 65% or so it was a few months ago. The more the dominance diminishes the more investors are transferring cash to buying alts. So, we're likely going to see alts surge in weeks to come from now.