If I invest $10,000 in ETH and hodl for 1 year...will I be rich? Just curious

depends on what you consider rich. ETH is safe investment in my opinion but where it gets in one year depends on lot of things like regulation, banning and overall development.
Ethereum is the hottest crypto in the global market. Honestly, speaking of richness I guess it totally depends because the value of ETH might oscillate from time to time and is very unpredictable. A lot of factors has to be considered with this issue before making a firm conclusion, but despite its volatility it surely is profitable and can satisfactorily ncrease one's income.