I guess this doesn't bother me anymore. I've used Lastpass for the last 5 or 6 years. Not having strong, separate passwords for any site requiring an account, is so 2007...
My experience as well. Plus, my passwords became stronger. If I know I won't remember it anyway, why stop at 10-15 character passwords? I just crank it up to 40 characters of gibberish, and let LastPass do the remembering. I love it.