Whether I would want to go to Mars or not would depend on a few different factors.
The most important factor would be whether I have a family and/or partner or not. I'm very family orientated and going to Mars isn't the same as going to a bungalow park. It's outer space. There's no guarantee that you could ever come back or your family could ever come to you. It's a gigantic risk you're taking. You'd have to be at peace with never seeing anyone you know ever again, and this isn't something I'd easily be comfortable with.
Second of all, it would depend on the kind of medical attention they're willing to give up there. It's an atmosphere we don't thoroughly know like Earth's atmosphere. We have no idea what kind of illnesses could be lurking around the corner. Not to forget any normal illnesses we already carry in our body. Would we be getting the medical care we need? Or would we simply get a first aid kit and be told good luck?
The last factor for me would be whether or not we would have any supplies given to us on a regular basis, or if we would need to find these ourselves as if we were on a deserted island. Of course, you'd be bringing some supplies with you the first time you go to Mars, but will there be any further deliveries for food, building materials, clothes etc.? I'm convinced that we can't take enough with us on that first rocket trip to sustain us for multiple years or enough materials to build several houses. Of course, we could take a look around at what we're able to gather on Mars, but I believe it doesn't contain all the materials we need to build warm, safe houses.