I'll echo would Larry said and also add that a big part of a financial advisors job is behavioral coaching. In other words, to make sure that people don't make the wrong decisions at the wrong times based on emotions (whether fear, greed, or anything else). There is a reason that individual investor's returns invariably lag investment (i.e. market) returns even when people are using index funds and it has nothing to do with fees or anything of that nature. It has to do with emotions.
People will get scared in a correction or bear market and when the pain gets to be too strong, they will sell. This is often at, or near, a bottom. Then, they will wait until it is clear that the ensuing bull market has taken hold and then buy back in. This is often at, or near, a top; best case scenario is that it isn't at, or near, a top, but they have likely missed a huge portion of the returns that the bull market has generated and will generate. Then they repeat that process over time. Unforunately, the process they are repeating is a process of selling low and buying high, which I am sure you can guess is a fantastic way to lose money over time.
A good advisor will help people avoid making rash, spur of the moment decisions based on fear, greed, or any other emotion that might play into it. Robo-advisors cannot do that because (at this point) they are pretty much strictly asset allocation and investment management.
So no, I do not think Robos will replace human advisors, unless (as Larry pointed out) a human advisor deals almost exclusively with the investment side of things and does so in a way that is not particularly sophisticated (for example, picking 3-8 index funds to build a portfolio).
Ultimately, I think you will probably see one of two things happen (or possibly a combination):
1) I believe that some larger fund companies or advisory groups/companies will potentially buy the Robo advisors to expand their offerings.
2) Robos will start hiring advisors to work in-house for them so that they can claim that they provide investment management at very low prices, but still provide a "full range" of financial planning services.
We are already starting to see that #1 could happen, and potentially very soon, with the recent acquisition of FutureAdvisor by BlackRock. It wouldn't surprise me to see that trend continue.
As for #2, the issue there is that the Robos have to generate enough fees to pay for those advisors, which right now, they are probably not doing (in addition to having to pay expenses, overhead, current employees, etc.). Additionally, you may have an "advisor" with one of the Robos, but are you going to speak to the same person every time, or will it be a situation where you call and whoever happens to be working right then answers your call and tries to assist.
Furthermore, if the advisors in #2 are people that you've never met and have only built a relationship with by default (i.e. they happen to work for Betterment, Wealthfront, or whoever else and they were either assigned to you or happened to answer the phone the first time you called), how much trust and confidence are you going to have in them when they are trying to explain why you should not move everything to cash during a bear market after there has already been a 20% decline in the markets; or why you should not buy your dream home for $X because it is realistically more than you should be spending on your housing within your budget; etc.
Will those advisors be "yes (wo)men" and tell you what you want to hear because they have other calls they need to get to or because they just want to make you happy? Or will they explain the reality of your situation (whatever that might be) and work on coming up with suggestions and ideas about what will serve you best in your situation - in other words, tell you the truth even if it is not what you want to hear?
So ultimately, while I do believe that Robos are not going anywhere any time soon, and I do believe that they can serve a valuable purpose, I do not believe that they will replace (good) human advisors now, or in the future.
Now, as to whether it is worth setting up an account to "give robo advisors a chance," only you can answer that question. Before you do it, you will need to figure out your expectations, how each different Robo invests, whether that will help you meet your goals, how long you are going to give them to determine whether the results are "worth it" to you or not, etc.
Hope all of this helps some and best of luck.