This will eventually be possible, but not in a very near future. Stll too many technological problems to solve first. The first and foremost is that planets beyond our solar system are for the moment totally out of our reach.
Definitely that is a major issue. For example, let's say that an exoplanet is 1,000 light years away from earth. How is it even possible to travel to that planet, given that we can never achieve the speed of light? Right now we are able to travel at around 1/10,000th of the speed of light, and at that rate, it will take 10 million years to reach this planet.