why kpop groups don't write their own lyrics ?

Because they don’t need to do that for the most part. Great if they do but it’s not necessarily a criteria for being artist since they are performers.

Also they’re a group not a solo artist who works alone. Not every member needs to write their lines; this is not a school project.

They don't want to, their companies don't let them, songs are bought with lyrics already, producers add in lyrics beforehand and so on

Not everyone is good at writing lyrics and it's not something mandatory for them.

idols are already expected to know singing; dancing; how to engage with fans and trained for variety shows. Also they release music more frequently than western artists. Most kpop groups have 2-3 comebacks in a year; add to that performing on many weekly music shows every comeback; holding fansigns; performing on various concerts and festivals; they barely have enough time to do all this. Also constant vlive and vlogs for fans in between comebacks. How do you expect them to write their own lyrics too? if idols are to write their lyrics; then what's the use of songwriters who spent years gaining education and experience in this field?

Quote from icyruios

Can't relate. My faves write every single song and I mean E.V.E.R.Y S.I.N.G.L.E S.O.N.G from debut till now.

Were SISTAR allowed to write their lyrics back in the day?

multitude of reasons why but it doesn't matter , if the idol does write more power to them !

Quote from icyruios

Can't relate. My faves write every single song and I mean E.V.E.R.Y S.I.N.G.L.E S.O.N.G from debut till now.

Explains why they are nugus

I am joking I swear

Quote from icyruios

Can't relate. My faves write every single song and I mean E.V.E.R.Y S.I.N.G.L.E S.O.N.G from debut till now.

You just keep on flexing this whenever the chance comes don't you

Quote from SailorVenus

i think she's talking abt day6 lol

I know she (actually he, if I remember it right) is talking about Day6.

But I still asked about Sistar because I was curious.

Quote from icyruios

Sadly no. Honestly I think it's one of the main reasons Hyolyn left, because of the lack of creative freedom

I see.

There are groups who write their own lyrics though. (G)I-dle is one of those.

It's not mandatory, completely optional. Some companies won't allow it because either the idol isn't ready for it or they have limits, sometimes idols don't want to, and among other reasons.