It's just like that sometimes. One day everyone wants to run something and you have to choose 1 party out of 4 that want to do stuff with you, other days are just dead where everyone is either afk or idling at the fc house. I sometimes say stuff like "Usually yes but I don't feel like doing anything tonight", but not always, ans I don't expect that either. Imagine 80 people being like "I dont know" everytime someone asks a question, or 80 people spamming "I'm busy" whenever someone aks if they want to do roulettes, that would get annoying real fast ^^