Compared with other altcoins, Bitcoin has more complete technical support and is a safer investment currency. And bitcoin has brought huge benefits to many holders, and in the long run, the increase in people's demand for it will also cause the price of Bitcoin to continue to rise.
But altcoins also has safer investment like those who are listed in top 10 currencies.
Bitcoin is the safest of course because of the Huge support and high demand but remember that altcoins also promise more support and benefits.
remember also that in Congestion we use altcoins instead of Bitcoin because of the High fees from the miners that cost us a lot and make us turn at altcoins for a while.