Why do so many things have masculine or feminine connotations?

It's sad how stereotypes get planted so deep in our heads that so many times we have a feminine or masculine conotation to sth. It isn't really the nature of the thing that our opinion is based upon but maybe some misconceptions of gender roles (e.g. strength, vulnerability, beauty...) It is just another way of society showing how badly we need to put everything in little boxes. It just makes it easier for us to perceive ideas that seem vague othewise. A big part of it also has to do with gender roles through history and the role they played. It is the weakness of many people to adjust to their time and realise that everything changes. But is a great comfort to many to be able to name sth as a 'she' or a 'he' just because they believe that if they are able to characterise sth then they will be able to understand it. A false belief that not only brings unhappiness to those who seek it but also to those that are the subjects of this brutal and unfair categorisation. We must accept that we are human and we are all different and we will never be able to put ourselves or other in boxes no matter how hard we try. Because at the end of the day our personality, our dreams, hopes, thoughts and feelings are bigger than just a box.

It's all about we see world, things and people around us, and it is the way how our society works!!

It's just how we were made as a society. I believe that it makes some things easier but it also can hurt people deeply. Maybe in the future masculine and feminine will be close to nonexistent.

honestly, screw gender. do whatever you want man, nothing is for one gender, it doesn't matter as long as you're happy.

It doesn't matter what social opinion is we are human, part of the animal kingdom and in the natural order of nature there is only masculine and feminine

It's a matter of cultural association. Unfortunately, our society has associated gender connotations to things that wouldn't have any reason to be masculine or feminine. But luckily, we don't have to follow these rules - we can just live the way we want without paying attention to the stereotypes and connotations associated with the things we like. Stereotypes are there to be broken!