I think that adventure is the right choice 98% of the time. Even small adventures like a walk in the rain win out over (some) responsibilities or laziness. Adventure refreshes the soul and makes you feel like you can tackle the rest of life.
Sometimes your guts cry out to stay home and you have to have a chat with yourself about the benefits of going out. You KNOW the adventure will be fun and good for you, you just have to get out of bed or away from the computer. But sometimes you DO have to listen to your guts. Sometimes your guts know that you are avoiding hard tasks. Sometimes your guts know you are fragile.
I've been dealing with some anxiety issues lately. I won't bore you with details...I just have some work+healing to do. But my brain+body issues mean that I'm hovering closer to my limits and do need to pay attention when my gut says "don't go!" If I push past my mental and physical limits I get cranky and tired and withdrawn...in other words, no fun to be around. Staying home and staying quiet can really help bring me back to a little closer to normal. Sure, I might miss out on a special moment, but I know I'll hear stories about it and see pictures, and I know I'll be ready for the next adventure.