I wouldn't be writing about my findings if I weren't confident that I were correct. But that's probably just me.
Yep, it is just you. A few of the most noble purposes of scientific publishing are to invite debate, reveal evidence found and provoke commentary on the working hypotheses. Unless otherwise stated, few scientists will claim to have the last, correct word on any subject.
Well, you must operate in a different world. No study is ever final or definitive. You tell others what you have done to let them know what you got and what you think and to keep them from getting there first. Feedback is then used to look again or try to find more information. Eventually a picture emerges, maybe like you thopught and maybe not.