There will be no manned Mars missions: radiation. The problem is that no one has any doable idea to stop it. And this isn't the milk toast radiation we get around the Earth. This is the really nasty stuff from the rest of the Universe. And if you are lucky, you won't run into a solar flare on the way. Aside from the pretty lights, it is really nasty radiation. Don't forget to protect your space craft's instruments, they are more delicate than even you.
Another reason is that if you send someone up there for roughly a year just to get there, their bodies are not programmed to work very well in extended periods of no gravity. One's heart and other organs were developed in the Earth's gravity. When they get there, they get to enjoy low gravity. And then up to another year later, they are in the right planetary positions to catch the red-eye back. We might get them there and back (irradiated as they are), but they won't be living on Earth. Their internal organs will not take the strain.
Ever lived with 4-5 college roommates in a tin-can for even a month. It won't be pretty. Now we want them married to each other for 3 year years. Yup, that'll work.
So to sum up, I think we should send you. You are dim-witted enough not to understand the implications so you won't experience any angst over the trip or the radiation or the lack of functioning bodily organs. But you'll at least be wanting in a little buddy. I suggest Elmo, he too is dim-witted and is wildly enthusiastic enough to go. And he has the money to make it happen. Go submit your application to him for the trip. Better take a lot of ketamine with you (hint: that's what you will need, not him).