I'm a regular person with low level of income and I can't reach bitcoin. Advoating that bitcoin is for whole society, is just wrong here since as a low-income-person I can't buy bitcoins.
It does not matter your level of income, even if you cannot buy a bitcoin you can buy 0.1 BTC or 0.01BTC or even lower amounts up to 1 satoshi, anyone can afford 1 satoshi and if you cannot then you have bigger problems than not affording bitcoin, second bitcoin is money and no one gives money away for free you need to earn it, but you are lucky you are in the best forum regarding bitcoin, learn and in a few months you could be earning bitcoin instead of buying it.