Some people like it. I would find it annoying except they used to do it all the time in the 18th century and it's kind of fun that an old convention came back.
> Some people like it & I would find it annoying except they used to do it all the time in the 18th century & it's kind of fun that an old convention came back.
Obviously it's fallen out of fashion, but it is/was just a shorthand way of writing "and" & it used to be pretty normal to just use it every time. It's not really something you can use "excessively"; either you write "and" as "&" or you don't.