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.
Yes becuase all things have end so we need to prefer to tge next future of coin that is etherium , i can say if the supply of bitcoin is exhaustes i think the value of bitcoin become high but bitcoin will die maybe 20 years.