“Bad Words”

Why are there “bad words”? 
If you search up “fuck”, “bitch, or “shit” there are multiple definitions, but they each contain that it is of annoyance, anger, complaint, etc. so why is it a bad word? Isn’t it just another synonym? When someone says “I hate you” vs “I fucking hate you” or “fuck you” why is it that you get in trouble for just adding that word? Shouldn’t the intent behind it be what matters? It’s just another way of expressing yourself. When you write an essay or are in school, normally you use synonyms in order to clearly express and portray what you’re saying, so why get in trouble for expressing yourself. I think they can say they are poor or uneducated words, but why is there such a thing as “bad words”? I do not curse for those of you who are wondering, not because they are bad words, but because I am respecting the fact that others get offended by these words. We are the ones who add the meaning behind them, the words mean nothing. 

Cigarettes 

Why aren’t cigarettes illegal? 
I understand that we all have the freedom to do what we want and choose what enters our bodies; however, people go to court for putting others in harms way, so why aren’t people going to court for smoking? I understand that the government makes a lot of people from this, but I don’t want to hear about that. People who smoke harm the people around them and the environment. How come they don’t get fined or receive consequences for this. I just want a clear and legitimate answer as to why it’s not illegal. At least how come parents don’t get fined for smoking when they are harming their kids. It affects everyone when one person smokes, let alone millions of people. 

I’m being serious, so if you want to respond, please be serious as well. I just want to know if someone takes this to court, if there is a possibility of getting something out of it. Can they make a law in which if you are a parent you will get fined for smoking near your kids?