Yes, sir! There may be many scam projects in the market, but there are a select few which are quite promising. The coins you've mentioned are as popular as they can be, but there are others which are also popular and actively developed such as Ethereum, Ark, Waves, and even IOTA. These cryptocurrencies are constantly growing in terms of development, and community support, which means that they'll be here to stay for quite a long time.

If I were to choose altcoins to buy right now, it would be the ones I've mentioned earlier. There's huge potential in them to radically transform the blockchain industry as we know it. Ethereum is the future of smart contracts, IOTA is the future of micropayments for the Internet of Things, while ARK and Waves are the future of borderless payments around the world. Before deciding to invest into these coins, it's always advised to do your own research just to be safe. But you can see for yourself that they're worth it, especially when they've declined to new lows.