If not the above energy boosters in the forum, many users would have used their energy in another profitable platforms or using here as a chatroom. Is there any other energy or immune booster?
Apart from the ones you've mentioned, which are very common here, they could still be more energy boosters, but only the person who sees it as an immune booster will know.
Everyone here is motivated by what brought them here; if you get what you want and it works for you, I believe you'll want to interact and participate more here. Those who do not achieve their goals here tend to become discouraged and participate less in the forum discussions. While it is being created, the forum has a purpose; if everyone is here for that purpose, we will have more active users here. However, in the forum today, everyone is entitled to their notion of the forum that brought them here in the first place.