Actually I've had a bitcoin transaction hang for 90 minutes.
Interesting trivia: Golos ICO had some weird difficulties, because a bitcoin transaction got stuck and created a backlog for all the others. How long that was going for? 3? I think days. I'll have to check, but when I was in cyber*fund's office it was there for 30+ hours. Luckily everything worked out fine in the end, but it was a very tense moment.
Bitcoin network was also being spammed at the time, but in my short experience of using Bitcoin, it is a second time that something like that happened.
So, the promise of Graphene based blockchains with their 3 second transactions (or faster) is the killer feature as long as I am concerned. Oh, SBD is another.
Of course, you could probably say that I was onboarded into the world of crypto by Steemit, and that is true. SBD made the process easier, not harder. I've been working (or rather selling my services) for SBD almost from day one, and that accounted for about third of my SP, during the relatively high price of steem in August/September.
If I was more patient and wise, and waited till the bottoms, I'd easily have 10k sp today (true, almost 2k came from visiting SteemFest), still I am leaning on the side of keeping the SBD, because it makes my life easier (and I know of several other people, whose lives are also much easier due to the existence of SBD).
Main reason why the SBD does that? Two words: low volatility!