An idea investor sees Bitcoin investment on a long term perspective, and having volatility as Bitcoin functionality it is expected to buy and hodl in other to have a compounded value of his investment over certain periods of time, Bitcoinis is a world class asset that is a store of wealth and value for future profits maximization.
Investors don’t just buy Bitcoin for holding shake and take profit later, some invest their money on Bitcoin as a means of reserve and inheritance for their children and extended family where they can transfer it as an asset to their family in time to come and the value might have either doubled or even if still in same price which is not possible inflation won’t affect it most compare to how it would have affected cash stacked in a local bank account which the financial system will still charge you for maintenance and other reasons which they use to debit someone.
That's it. In part, Bitcoin is an investment like any other (but unique in it's kind, and appealing to many people who is looking to diversify) and, however, it has also an underlying philosophy that convinces many other people who wouldn't be interested in legacy Wall Street or Big Tech investments.
When you acquire Bitcoin you're accepting a responsibility, acting like your own bank, but also with the message you're sending to the markets.