I simply enjoy the pleasure of digging down inside of me to find those words and chords that go together, and when it's happening, it's the biggest and best high in the world. Then to hear the finished product... how can it get any better than that?
Same here.
I like it as much as learning a new lick on guitar, or learning a new instrument. Songwriting takes practice, and while it may not make it perfect, it is very enjoyable.
There's a crazy bunch of folks about to embark on what they call 50/90, writing 50 songs in 90 days. Kemmrich might be one of them.
http://fiftyninety.fawmers.org/I do the February Album Writing Month challenge, which is 14 songs in 28 days. I had a couple of them this year that I like going back to and listening to. That's success to me.