Unless you plan on being a bachelor your whole life it does not really matter. I know a cop who is 5'6" and is married to a pretty lady, and they have 2 kids together. Most people are really only looking for 1 partner. Once you find the right person, and you're established, height does not matter as much.
It matters more for people like Flinstones who is single, young, not very well educated and does not have a steady/good job (hope you're trying to correct this Flinstones). So yeah, being 6'0" and muscular sure does help in his case.
Sure, Id like to be a few inches taller, but up until now, it has not stopped me from finding a gf, a job, etc.