I think you are very wise to consider all these things before just doing it because "no one knows what the future may bring". Unfortunately with MS we surely do have a better idea of what it could bring than most people.

My two major concerns would be the chance of passing it on to a child, yes there is an increased risk imo, as well as financial stability in case you need to hire someone to care for you or your child. If finances aren't a concern adoption might be a great alternative.

Growing up today is hard enough under the best of circumstances and while all the success stories are inspiring reading just one on MS World from a young person who is terrified of getting MS or has had to be the primary care giver for their parent with MS breaks my heart.

Best wishes with whatever you decide.