Day lilies - are they worth it?

Each flower only lasts a day, so why grow them?  Well ........... this is Hemerocallis "Artic Snow", which is cream with a green mark, and the flowers are huge.I got three all in one day, and there are at least 18 buds to go so yes, they are worth it.  I like a garden that has lots of things going on all year round, so I don't buy bedding plants (although I do have some nasturtiums from seed struggling along!)