I'm still of the impression that Bitcoin beats our fiat system in almost every possible way, except for transaction times, and fees. However, with the former there are ways to improve it or at the very least mitigate it. However, whether it's advisable to do that remains another thing.

I genuinely believe most people will find a use for Bitcoin, however I know not everyone likes the idea of being their own bank, and I'm quite shocked it hasn't happened yet, but I can see banks making their way into Bitcoin storage, which will appeal to a certain type of person. While the very core users of Bitcoin will likely be hostile towards that, I might say it might even be necessary for mass scale adoption, since Bitcoin is a complex subject, and we can probably only simplify it so much, and therefore as long as there's complexity people aren't going to trust themselves to look after multiple thousands worth of Bitcoin, thus opting for a third party that will supposedly be more qualified in handling security issues.

So, with that in mind, as long as we continue moving forward, and we aren't too hostile to things which might go against the very core of Bitcoin principles, we should still see some major adoption. Obviously, people like us will opt to handle our own funds, but I'm just giving an example there where decentralisation might actually be harmed in the future, something along the lines of what OGNasty said.