Many people buy coins that they simply like, you need to study projects and look for prospects, and see how their technology and coins can come in handy in the future. XRP has more advantages than bitcoin, but this is my opinion.
Well, many people don't make proper analysis before jumping to bandwagon in order to get rich overnight. There are better alternatives than XRP and I respect your decision. With simple intention, it is understandable to invest in cryptocurrencies but honestly, centralized coins don't have a future in my opinion. Better to look for decentralized cryptocurrencies.