Bitcoin is one of the best investment in the world right now and the best crypto coin in the world also, Bitcoin is the first crypto coin that was created and it has been doing very well in it's growth, I don't think any other crypto coin will be bigger or better than Bitcoin, I know some people feel Bitcoin will not grow more than it is now or Bitcoin will fall one day and will never rise again, all this are not true, if you go through the history of Bitcoin you will know Bitcoin will not fall and that it will keep growing bigger and better.
Other coins that are been created is even controlled by Bitcoin if there's a dip in Bitcoin it always affect other coins, when you talk about having peace of mind investment then the best for that is Bitcoin, a lot of people has lost there money in cryptocurrency investment and those that lost there money lost it in investing on new coins and that record alone has always given Bitcoin a big edge over the coins.
No new coin can ever take the place of Bitcoin as the best and biggest crypto coin in the world, a lot of countries has already accepted Bitcoin as a form of payment.
Bitcoin will remain the best.