If you already have coins, and you're happy with them, then there is indeed no point into buying more. I however have to point out that you shouldn't force yourself to buy 1 or more whole coins. Bitcoin's divisibility lends itself perfectly for people to buy fractions of a whole coin per time. Other than that, the get rich times with Bitcoin are over for the average person -- it's something that they have to forget about. And another thing, you don't lose anything if you aren't selling at a loss....
If bitcoin will be acceptable locally like in japan as legal the market of bitcoin can be affected a lot so buying bitcoin still not late if you really want to earn great profit in the future.. buy right now and make profit soon.