You feel like going out this week, after work or at the weekend, but you don't want to spend an hour figuring out what's on. You've done that search before and it's not enjoyable - too many sites, too much that doesn't appeal, too much information to wade through.
A different approach: once every week or two, when you've got ten minutes, you open CouldWe and click through your shortlist of event sites. Save anything that looks interesting. The session is short and you mostly forget you've done it.
Over time the list builds. Fifteen or twenty options ahead of you, all things you've actively chosen as worth considering, all current. When the moment to actually do something comes, you check the list. Choose, don't search.