I love my iPhone, I don't know if I could switch to another brand now.
I totally agree.  I have had an iPhone since it was released in June 2007.  I loved the first-generation so much when it first came out.
My girls still have a 5, but I recently was gifted an 8 for my birthday.  It's so much bigger than my 5 but I love it.
It's hard to believe there have been eleven generations of iPhone models.  I still have a 6s but plan to upgrade to the X soon.  I love the 6s though and I've heard good things about the 8.