I've never written a TNLN TFTC type log, in fact just had a look and the shorted I have written in six words, I haven't placed a cache of my own yet either ... plans are afoot though to do so!
In my opinion cache setters take time and trouble and spend money in setting caches, and I am appreciative of every single cache, and I feel they deserve something back. On a long route, I will often copy and paste an opening paragraph, and then add a different sentence or two afterwards, even if it is just something like 'this was an easy find, co-ordinates spot on'.