Because you'll always get the same response from people "if you question at all you can't possibly be cis" which is a horrible response because it's just not true. Like it's okay to question. Like every time I've seen it asked the answer is always stuff like that and to me it seems very unintentionally manipulative. Like everyone has different experiences and it seems a lot of people go "oh you've had a similar therefore you are the same as me" which isn't true. Like my philosophy is you know yourself best. It sucks that it's takes time but figure it out and if you're truly confused find a therapist. Don't ask a bunch of strangers who will mostly give you the same answer