All people have a list of things to do before die. Travel to space is at the top of my list. With a simple calculation, I figured that I don’t need to do anything for accomplish the mission. The only obstacle in front of me is dying.. In my opinion, space tourism will be stable in 2020. 5 years after that, it will be common as going out of country for now. If it becomes common after 5 more years, I have 17 years in front of me. In 2030 I’m going to write a comment to this post with using the interplanetary internet.