Are 45rpms worth the price?

Agree with Viridian, particularly with respect to classical recordings. I particularly am bothered with recordings that split a movement across two sides; sort of reminds me of my old 8-track player. But with recordings of shorter, distinct pieces, the sonics make it worth buying, IMHO.

For the Doors, I'd try the recent CD re-issues first before dropping bucks on 45 rpm vinyl.

I have the latest CD master of "L.A. Woman" and it is definitely worth the money. Few CD remasters I have heard make as much of a dramatic difference over earlier versions (both CD and vinyl) as this one.

"I got the Doors Morrison Hotel and was disappointed.. my original Doors sounds better."
I will tread slowly on that one. I have a RED label original which I also like very much. I do have the s/t, Strange Days and LA Woman on 45. The s/t is very good, Strange Days is unbelievable, and LA Woman is not far behind.
As far as the post goes, I am a fan of 45's sound wise, but it's more work! Just for example, I have Classic records Led Zep's 4th album (zoso) on 33rpm. I have that 45 RPM Stairway from the BOX set. The 45 sounds much better than the Stairway on the album. I did not like Rumors 45 too much. It seemed to lose a bit of emotion for me. I always reach for my standard pressing Rumors. Al this IMHO.