I believe by the time we have the capabilities to travel to other planets without much cost, we will also have to ability to transfer brain memory into computers. This will make traveling to other planets a lot easier (and that's only if we don't have FTL travel). Reason is because when we start our adventure to another planet light years away, we could either spend our spare time in a virtual reality, or turn our selves off for the duration of the travel and turn ourselves back on once we reached the planet. Years could have passed and it would seem like it was instant. For the first planets to actually be visited, I would 100% say mars first. I know there are some moons on our solar system that seem habitable. We could potentially probe around more with the planets in our solar system as well that we cant actually build on, and maybe one day harvest them for whatever they contain. For outside our solar system I'm not sure. There's way too many possibility's in space and so many directions to explore. Our solar system is really just the baby steps of our space expedition.
For me, I wouldn't want to travel to another planet. Not because I don't want to, but because if the option of virtual reality is out, why would I spend any time in the real world? In the virtual world I can simulate me finding life on another planet, trying to find life on another planet in real life seems redundant. Also, along with traveling to other planets, once I do actually transfer my brain data to a computer, I do actually plan on going into space. However, I will be set in a path in space to rotate around the earth once every 20 years (roughly, who knows how fast computers can advance by that time). I can't say for sure now, but the idea remains that I will spend my time in a computer capsule that is secluded from most dangers in the real world. Once I can live independently, and when my computer is so advanced it can advance itself without help from earth, I will split off from earth and find the nearest exit out of our galaxy.