To put it simply I find getting other opinions useful so hope that my perspective will be useful to others. For me is about a fair exchange - I benefit from reading reviews so it’s only fair that I share my opinions in return.
It’s important to recognise that any reviewer has their own set of standards, biases and experiences so reviews are always subjective. The wider the variety of reviewers the broader the review of the service.
I hope that other people benefit from what I write and that my posts contribute the picture of the location or service I’m writing about.