A lot of things have a huge growth potential. If you ask around here you will find a lot of people who bought way back and are many thousands of % up, which does show a good track record so far.
The problem with potential is it's hard to quantify in future in terms of a) how much, and b) when.
That's why hodling pays; it's often hard work. No one here has a good enough crystal ball to give financial advice, but the majority believe.
The best advice? Do your own research, make your own decision. Then if you like the tech, the development and the support behind Monero? Well, join in... you will be welcome.
Nothing to add here