you are right that monero offers higher privacy compared to what bitcoin offers. but why monero seems unattractive to people is because it is not completely anonymous anymore because at any time regulators can crackdown on monero. and especially in the minds of most people today, bitcoin is the most popular coin which offers a level of anonymity and security in transactions compared to what other coins offer. also, the adoption level of bitcoin is higher compared to monero, and for this reason more people use bitcoin compared to monero.