They work extremly hard 24/7 but if you think about it we often forget that it was the same for all these legends (destiny child, Mariah Carey, Prince, whitney houston, MJ) they all had no time to breath on their first years like bts, then once their success was secure they did less touring, less albums and promo to finally enjoy their money and vacation.
So it will be the same for BTS, espacially that Bigh!t new boy band will debut in 2019.
I'm scared for bts that mid 2019 or start of 2020 will be the start of their down road because big hit will have full focus on the new group.
And we all know that all the young fangirls are only looking for the new or next hot things.
And if the army are too freaky on social media, the croud that don't know them will not be attracted to bts due to the fan's reputation.
And by 2020 they will be considirate as old/as been.
It's sad to say but I think in 2020 they will either disband or stay as a group but go solo at the same time :
V - acting (+ maybe a free mixtape or cover?)
Jin - army (the real one lmao)
Rap line - solo rap carrier
Jimin and JK - solo singing carrier