Not late, if anything it is still early into the life of bitcoin as it is slowly creeping into the masses and at that point it still won't be too late so if you can afford it now why not go ahead.
I think its not too late to buy bitcoin now and I think it is opportunity to buy bitcoin now because the price is very low. In addition to that, if you buy now more bitcoin and hold it then sell it in the right time I think you could become a millionaire or billionaire in the near future. Lastly, if you buy bitcoin I think its better to hold it now than to sell it.