Almost From Seven Month i use Bitcointalk Forum. I see that have many Forum same like Bitcointalk. For Example, Cryptotalk, Altcointalk, Bitcoingarden etc Forum. But Why People Always like and Use This Bitcointalk Forum.
Yes there are a lot of forums in the world that talk about bitcoin yet bitcointalk.org is the best among. The ones you provided, it i only one that look like bitcointalk which is CryptoTalk.Org but the features and the interface is very different from bitcointalk. Bitcointalk interface is very easy to understand and navigate. You know there are a lot of benefits in bitcointalk but I do not know if the other platforms or forums have the same benefits has bitcointalk. People or users stay online writing, creating, publishing threads, articles with their times and data and also with their strength, so with that they go to a place that replace the data for them. Also from the 3 sites you provided bitcointalk is the most easiest one to communicate with users. Although, I have not use the others but from the interface I saw it.