Well you are too late in buying bitcoins if you're catching the lowest price of bitcoin. Because bitcoin at 2011 is $4 and when you bought at least 10 bitcoins wow you're a millionaire. But wait for bitcoin to fall at $500 in August 1. Not to fud but, I heard so many articles regarding the split that makes btc low.
So if I would've bought 10 bitcoins, I would've been a millionaire? The current bitcoin price is ~$2600. 10*2600 = $26,000. So you would've had 26k by now... That's far from being a millionaire...
To become a millionaire, you would've had to buy 385 Bitcoins.
And when Bitcoin rises, there are always these "Doomsday articles", which emphasize the possible risks of investing in Bitcoin. To be honest, I think you could read them, but really do not take them too seriously.
There have always been, are always and will always be articles about the doom of Bitcoin.
Just... Don't be too much of a panic believer please?
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Anyways, I believe it's not too late. Just use Bitcoin as a regular payment method and that would already help it grow

Regards,
Trump