I thought for sure it would take until the end of 2018 but it looks like this summer ethereum might pass it up. With the turmoil around BTC potential splitting, it might be very soon. IMO this is healthy, we will always value bitcoin for being the one that started it all, but it's time for a more dynamic and adaptable currency to take the lead.
Wouldn't you say that every crypto is speculative right now? I can't use even one of them in my daily life. And how is it that you're looking at actual usage?
Either way, back to my response, market cap has some basis for comparison (to be taken with a grain of salt of course), where price alone doesn't.