I forgot to say - what I also love about the song is that it's (lyrically) clearly signposted as being about heartbreak ('Lived through some sad times / this time the hurtin' won't heal' etc) and yet it also makes you sympathise effectively. It's hard to make the literally stated affective - unless you're soulful in delivery or songwriting.
Also, I wanted to to say I'd love the song simply for the way Kenny pronounces "whiskey".