Two years ago, I watched HOME ALONE on my flight back to Buffalo for Christmas, and I was shocked at how funny it still was. That movie really holds up. Why? It's fun. It's clever. It's something you actually want to watch.
I'm working on another draft of a comedy feature I've been writing for a long time, and I recently got the note: "Think about why people would actually want to watch this movie." It sounds silly and elementary, but it was something I had forgotten about amidst multiple drafts, new characters, social commentary, arcs and themes. Why is this an interesting premise? Why should people pay fifteen bucks to sit in a dark room with strangers and watch this? What adventure are we going on? What is FUN about it? Not all scripts are comedies, but the good ones in all genres generally have some element of excitement, fun, wish fulfillment, etc. It's walking past a cop, wearing a nun mask and holding an automatic weapon in THE TOWN. It's fast-forwarding through the boring parts of your life in CLICK. It's outsmarting robbers with Hot Wheels and marbles in HOME ALONE. Stuff you can't do in real life, but kind of wish you could. Wouldn't it be cool if... ?
Sometimes I read or hear loglines and think, really? Why would anyone want to see that? It seems crazy that a writer would spend weeks, months, even years working on that idea. But I understand that there's always something that draws you to your project. Maybe it's a social phenomenon, or a complex character, or something you've always feared. There are lots of reasons you might be attracted to a story - but how can you attract readers (and audiences) to it? Are you really milking your premise? Is it fun?