Your opinion is not always wanted

Why is it that people feel the need to burst others' bubble in life. If you have an opinion about something that doesn't mean that you need to share it unless asked. My mama always said if you don't have something nice to say then don't say it at all. Well you shouldn't say it! If you don't like something that doesn't mean that you need to share it with everyone! People are all different and like different things and that is what makes all of us unique and special! So of course we won't see eye to eye on everything and that is okay. Just because you don't like something does not mean that your negativity is needed. You don't have to agree, but you also don't need to be rude.