Why do they all choose BitCoin? Its arguably the worst cryptocurrency by all means but the price. It has ridiculously high transaction costs in money, time and energy, easily becoming nearly unusable this way. Doesn't it?
Without trust and network effect value doesn't exist and most of what you see as problems is a direct result of its success and popularity. With these new more relevant metrics of success in mind it becomes simple to see why it's undisputed for now. There's 1-2 competitors maybe but none with a track record of standing a chance over the long haul.