Never ever be apologetic for your enthusiasm. If people don't like it? They needn't look. You weren't put here to please the world. Please yourself. Those who do understand you, will magically appear. Fact.
"Real friends shouldn't!!!" - says pinner. Actually REAL friends WOULD, if doing so protects your interests. If my insecurities are leading me to make bad choices or jeopardize myself in any way, I sure as hell want someone to care enough to say so. Real friends do not PLAY on your insecurities. There's a big difference.