1. It’s gaining mainstream credibility as industry players consider it as the new gold – Bitcoin has many of the same qualities of gold, whose value is not controlled by governments.
2. Many investors and finance industry experts are serious about the promise of Bitcoin – A large number of mainstream investors and entrepreneurs already consider Bitcoin and other cryptocurrencies as a legitimate asset class.
3. There is only a limited amount of Bitcoin – There are only 21 million Bitcoin tokens to be mined and no new tokens will appear until after 2140. This makes Bitcoin a deflationary currency whose value increases naturally with time.
Source here. These are interesting big reasons why it is so wise to invest in Bitcoin. I am sure that many people are still doubting Bitcoin whether it can be a good investment vehicle or it is just another risky venture that can collapse anytime. Of course, we know better. So in case someone would be asking you this same question, you just have to enumerate the three big reasons above.
Bitcoin is compared to gold not because its value is not controlled by governments, but because it's supply is limited as that of gold, scarcity, store of value. Obviously, limited supply, higher demand, value will naturally increase.
Like Gold, Bitcoin is a safe haven asset. Value increases during political or economical uncertainty/crisis, but unlike gold, Bitcoin is not correlated to other assets. It's a new asset class and that makes it a good investment.
Bitcoin is #1 in every important aspect. It is sort of obvious that no matter how high the price is, it is and always will be a great investment. And yet it's just too hard to overcome thoughts that btc was worth a couple of dollars and then when it was worth hundreds, the price already seemed to high to consider in as an investment. My father lives in a poor country and has a $300 salary per month (which is an average salary here). He doesn't invest into altcoins. He earns some btc and spends it but he has 1 btc he just stores for better times. Once it was just $800 but it's already $4k. I realize it's a promising coin and the price might even go up and up again but it's just too hard for me to consider investing it such an expensive coin when there are so many cheap and improved ones.
I don't know about the improved ones, but do know about the cheap ones. A whole Bitcoin is expensive and will become more expensive in future, but you necessarily don't have to buy a whole Bitcoin, it is divisible, invest on fractions of Bitcoin, 0.001, 0.01, 0.1.