There are several likely reasons-
1. Many of the questioners are very young people- some are pre-teens.
2. In some instances, English is the second (or 3rd or 4th) language ofthe questioner- we DO get questions from several nations.
3. Some questioners are in a hurry, and make common spelling mistakes
3A. Some questioners are in a hurry and make common typing mistakes
4. The public schools (in my humble opinion) poorly educate many students in the basics of English, including spelling and grammar.
Now, are you certain there is not an error in grammar is YOUR question?
People who use bad grammar in their questions.
Because people cannot spell or use grammar correctly.
Because not everybody speaks English as a first language. Therefore it may be difficult for them to find the right words for their questions. Some people also suffer conditions such as Dyslexia which causes them difficulty in reading and writing. Contributors should correct the grammar in poorly-worded questions or, if the grammar cannot be fixed, the contributor should report the question to a Supervisor.
You have to remember - there is no minimum age limit on here - kids as young as five could be answering. People of that age have no concept of what grammar and spelling is !
Because not ALL of the members on this website have proper grammar skills, let alone the full English language, sometimes we have to cope with their grammar and do our best to either edit it or read it to the best of our ability. Honestly, there is a lot of reasons as to why someone has bad grammar usage, depends on the person. The site is open to all ages and to people for whom English is not a first language.
I recommend checking your grammar, because most people need complete logical sentences to answer questions.
science cannot answer questions about what people should do
He's either pitiful or rich.
Not all users of this website use incorrect grammar. People come here to ask general questions. If this was a very specific website for academics, you may expect a different standard. It is also my personal belief that if you can answer questions, regardless of the grammar that you use, you are helping someone. It may serve you well to not get too hung up on it as the internet is rife with "bad grammar"
Because random people are anwering your questions, such as I.
because one cannot question a question.....
Because the state didn't require them to pass the class.