This isn't intended to be another spam thread, this is real analysis.
Bitcoin was a good experiment while it lasted, but through experimenting with it it's shown its weaknesses, weaknesses that other crypto's have already made headway in correcting, just without wide adoption.
If there is anything that working in the technology industry has taught me it's that successful technologies are rarely without huge design flaws or weaknesses. In fact, those flaws and weakness often foster an eco-system of early adopters and businesses that develop to services and products to "fix" things and this in itself has a powerful viral/network effect. For example, look at the Bitcoin services offered to merchants.
Don't get me wrong Bitcoin's future is far from certain and has a high chance of failure, but don't under-estimate the ingenuity of people to work around the problems we see today, especially when motivated by sizeable financial opportunities that simply don't exist in the alternatives right now.