I think that it is because it is following the path of Ethereum. It has made a lot of projects and made it popular due to smart contracts and that was said by the guy above. But if that's not enough explanation for you, you still can keep up with your research on which altcoin you want to invest in. XRP is already a crossed-out to most investors list because of the active lawsuit from SEC. Aren't you aware of that issue on them and you still include them on your list?