Two of the worst words you can use in an argument are “never” and “always”, because they speak about absolutes. It is very rare that someone actually never or always does something. Often and seldom are much better substitutes, but also make sure that is what you really mean. It can be hurtful to accuse someone of never doing something you want them to, or always doing something that bothers them. Instead of speaking in absolutes, find ways to focus on the problem itself, and solutions, compromises, and ways to work things out. Never and always also promote you raising your voices, injecting them with anger. That is never something that is going to help a discussion, but will likely turn it into an argument.