While lotto events are among the most lucrative in the game, I think it’s important to keep in mind that this is supposed to be an entertainment product, not a job. When you start treating events or accomplishments in a game as obligations, you’ve crossed into dangerous territory. Sure, not participating in a lotto will mean significantly slower progress in the game, but that’s not really an issue if you’re perfectly happy with the rate at which you are progressing, already. After all, this game is 90% about farming, and you’re unlikely to run out of things to farm in the foreseeable future, so what’s the hurry? I plan to burn as many apples as I can to farm lotto boxes, but I don’t plan to make any sacrifices to do so. I’ll farm as hard as is comfortable, and be happy with what I get.
In all seriousness, these games are specifically designed to evoke compulsive behavior–it’s really important to keep that in mind and watch for symptoms of addiction. Feeling like you are obligated to participate in an activity, even though you don’t enjoy it, is one of those symptoms.