Highest Adoption Rate
One of the things that makes Bitcoin a better cryptocurrency to invest in is that many companies are adopting it more than any other virtual currency.
Microsoft, a tech giant, is among the companies that adopted Bitcoin as early as 2014. Other companies allowing users to pay with Bitcoin include Overstock, Tesla, Virgin Airlines, Twitch, and many others.
The adoption Bitcoin enjoys makes it a more viable cryptocurrency to invest in, as many big companies trust its potential.
Because of adoption, Bitcoin enjoys more stability than most other altcoins. If you check Bitcoin's price today, it still needs to be equaled by another cryptocurrency.