We might not be all too proud of the parents to our Sleipnir. But if we see Loki (–Sleipnis mother–) as man-kind (–who is fucking up situations, and then desperately trying to amend his mess–), we see that Sleipnir is an all-worldly useful little vehicle.
Svaðilfari (–he who takes on challenging expedition–) is a powerful stallion, performing huge tasks. Not so bad for breeding at all.
So we admit: Sleipnir (–our human nervous system–) is a precious gift to humankind. We shall take good care of him, and see him as the priceless way to visit Ásgarður.
See book Stjarnvísi í Eddum by Björn Jónsson, an Icelander.
How the funniest myths are sky-phenomena: planets actors, Askur Yggdrasils and stars the stage and happenings.