Just because you’re not smart enough to figure it out doesn’t make it a poorly designed application.
I echo some of the people disagreeing with you, Lizard.
No application is 100%, and GMail has a few faults*, but the advantages of the interface greatly outweigh them. Once you understand the functionality, pretty much everything you’re demanding of your mail client is not only feasible, but actually works a hell of a lot better and more flexibly than other mail clients or webmail interfaces. It just takes a while to get used to some concepts. The trick is to use the label, archive, and search features. Once you’ve started to use them and realise their utility, you’ll start to understand why everyone’s very happy with the interface.
Accusing people of “drinking the Kool-Aid” merely because you don’t understand the innovations in the interface, which therefore doesn’t conform to what you expect to see in a mail client, is a trifle hyperbolic.
*E.g., as mentioned, if you send a round-robin to 50 people and they all reply separately, then you have an almighty “conversation” to disentangle. However, most “conversations” are in fact on the same subject; furthermore Outlook et al have this feature too - they call it a “thread”.
Only if you’re pedantic.
Gmail rules. Google will rule the online universe. Everything they do turns out to make sense in the long run. I trust them fully with everything they do.
I use them for eMail, spreadsheets, notebooks, calendar, maps, portal.
If Google one day said, “all right, you’re going to have to start paying us a yearly fee to use our products”, I don’t know how high they’d have to go for me to refuse.