Doctrine mattered a great deal to me. Although like some have said I never believed in the goofy conventions as being a fulfillment of prophecy. As long as the basic core was something I could believe in the rest was ignored. When I found out about the UN I left because of the hypocracy. At that point I was then able to wipe the wool off my eyes and seriously examine the whole thing more objectively.
I don't think doctrine matters too much to most dubs. They are in it for the socialization and the belonging to something bigger that themselves.
Loris