Like yourself, I think the Note 9 is 1 powerful, unique, full of functionality all in 1 computer in your pocket type of phone. However, I do see there is both negatives and positives of both note vs. iPhone- but the gap is closing. Each year they make them become more 'similar' but they are also so different too. As owner of both, I know full well.
However, if you have lots of friends and family on the iPhone, having an iPhone for iMessage / FaceTime is just no brainer. These services are very "basic" but the iPhone actually do them very well. Currently, Android can't touch this because of no standard RCS.
I dislike all the comments of saying "why don't you keep the note then if you like it, your opinion is no value to us?" (Cringe worthy!) There is LOTS to learn from both sides. Samsung make the phone customized to your wants and needs.. bursting full of shortcuts and customization which makes the phone seem more advanced than iOS in many ways. The S Pen is just very useful to artist and people who love to write. I mean there are stuff Samsung / Android does that are better than the iPhone. I feel both learn from each other (galaxy and the iPhones).