Just one of those days

The one thing that bugs me is the way that females expect everything from us males. Over the past few months, all that I have heard is that we need to ask girls out on dates. At that time I had a girl friend. I have a couple of friends that were also saying the same thing about themselves, that guys don't ask them out.
Well in the past 4 days I asked both of them out, different days and times, but they just looked at me and told me that they were busy doing things with their friends and that they wouldn't be able to go on a date.
Well if you are going to turn down a date when asked on one, then why complain? Be willing to go with someone who isn't that dream guy that you want to ask you out. I've come to the fact that girls want to be asked out, they just do not want to go on dates. If this true, why do we waste our time asking girls out only to be rejected?