I'm surprised I'm the first to mention this here, am I really the only one that feels this way?

I don't want to know what diseases I could have. I'm happy living my life by the day and planning for a future that I'd love to have. I'd hate to discover I'm susceptible to x, y, and z; and that if I were to have a kid it would likely have a, b, c....

I'd rather jus live and let live. No need to worry about stuff that may not come to pass, and no need to brood about something even if it is, in the end, inevitable.