If someone give me only two options invest my money in hyip website or put my money in mining, i am sure i am will choose put my money in mining bitcoin. Although mining also have a risk but better i choose it rather than hyip. I think hyip is not good to do. Many peoples was scammed in hyip and loss a lot of money.
Risk exists everywhere, difficulty mining growing. Requires more powerful equipment and more electricity costs and the price of Bitcoin can always go down to the level of unprofitability, it is as lucky.
Mining bitcoin is not very profitable anymore, but you can mine some other coins, which can still bring some profit to you (Monero, Zcash, ...) and then convert them to bitcoin.
Converting them to btc will also open the door to trading markets for you, so then you can increase your profit by trading as well.
i think mining bitcoin or any other currency is not such an easy job, and everyone cannot afford mining and specially people from the backward countries they cannot afford mining expenses, therefore to me i think alt coin trading will be the best option for them. as they can trade any alt coin every with investing a little amount of bitcoin.