Answer:
because people get bored seeing the same thing over and over
1. Kim Seokjin
2. Baby Mochi, chimchim, chimmy
3. Kim Seokjin is 28 in global years, 29 in korean years
4. I am never really constant with my bias in bts (mainly because i get wrecked by every single member every day) so when i first became ARMY my bias was Namjoon (aka president kim namjoon or namjoonie) then it became jungkook (aka jeon jeongguk or jungkookie/kookie) but now it is Jimin (aka Park jimin and all nicknames listen above.) I still get wrecked by every member tho.
5. I would say life goes on, blood sweat and tears, fake love, telepathy, and many many others.
Have a nice day Army <3