I don't see the point in buying bitcoins. I don't have enough money to buy a lot of coins. I'll keep what I have and try to earn more. I think that the majority of people cannot afford to buy more than a few bitcoins. Such investments will not make you rich, but you will risk losing it all.
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....
True if you want to get rich with bitcoin then it is already too late in my opinion unless the price really skyrockets, so it is better to take our chances with altcoins if that is what someone wants, but at the same time the earnings you can get with bitcoin are like nothing you can get anywhere else so if you have big capital you can easily multiply it by investing in bitcoin at the right time.