Spring in the high desert is, perhaps, more precious and fleeting than any other season in any other place. While that could be argued, the point is not to establish some finite and ultimately meaningless point so much as to agree that yes, indeed, spring here is a time to get out and embrace everything you come in contact with.
Drive into this valley on just about any route and you're constantly bounded by green because the roadways follow the waterways, as does the vegetation. You see green in this desert because the roads stay near rivers, giving the impression that the place is less arid, and hot, than it is.
I assure you that is not the case. My Dad would love to tell you how inhospitable it is in summer--just ask him.
All that said, in April and May there are pockets of greenery in the desert far away from any visible or accessible water sources, and it is to these pockets that we are drawn. While traveling to these places is relatively easy in our modern times, we go not because we know what we'll find when we get there, but for the joy of what we discover along the way.
That simple fact (along with a little insistence from Fang) compels us to get up and step out the door.
The season is both ethereal and ephemeral: The former is due largely to the latter. It's special on it's own merits, but it's also special because it doesn't last.
Enjoy it while it does.