Kirkman has a habit for writing very, very, very long stories but does at least eventually end them. TWD comic lasted 193 issues over 16 years [October 2003 - July 2019] while Invincible took 144 issues over 15 [January 2003 - February 2018].
Somewhat surprisingly the ending to Invincible was actually quite good despite how long it ran for as often the hype overtakes the story and sets an impossible standard to meet.
His current comic Fire Power recently came back from a 9 month break of all things but is supposedly meant to carry on monthly now.
Kirkman has a habit for writing very, very, very long stories but does at least eventually end them. TWD comic lasted 16 years while Invincible took 15. Somewhat surprisingly the ending to Invincible was actually quite good despite how long it ran for as often the hype overtakes the story and sets an impossible standard to meet.
His current comic Fire Power recently came back from a 9 month break of all things but is supposedly meant to carry on monthly now.