Lightning Network is being tested as we speak, and even you could choose to contribute by reporting bugs, potential issues, etc. Ultimately, we need something to bring Bitcoin to the next level, because if that doesn't happen, Bitcoin won't be able to cope with the increased demand, which is something that we at all times should avoid. It's clear that Segwit alone won't do much in that regard, and that's something obvious even without Segwit being utilized right now. It was never meant to solve anything in terms of scaling, but more to buy time in the runup to Lightning Network. We'll see what happens, but I am confident in a good end result, where we definitely need it to succeed in order to stimulate further adoption.