Friendly advice, don't waste time convincing someone that something is good or bad, right or wrong - adults are not children but fully formed people who in most cases do not want to accept other people's explanations or suggestions. The reasons may be that they just have a low IQ and can’t figure out some things, to the point that they’re just jealous of what you’re doing and don’t want to admit it.

If you're happy with what you're doing, don't worry about what your friends think about it - you're not doing anything illegal that their advice should be considered well-intentioned. Life is too short to worry about what others think, the sooner you understand it the better for you.