Overall, Bitcoin provides a lot of additional value over other currencies. Firstly, it provides transparency and a history for each transaction, which is not possible with most altcoins. Secondly, it has an un-stoppable network effect: the more people use or know about Bitcoin, the more valuable it becomes! Thirdly, the lower supply of bitcoins means that higher prices are required to buy them and hold them. This creates scarcity and increases demand
Don't put all your confidence and trust in bitcoin because if a better technology comes out tomorrow that surpasses that of bitcoin, you will see how people will dump bitcoin and embarce it.
Bitcoin is mostly safe and better than other altcoins because of its decentralized network. It doesn't have a back door for anyone to manipulate it but those other altcoins are centralized system and can easily be controlled by the government or anybody. Bitcoin transactions is made between the buyer and the seller alone.