Do you use mods on your first playthrough?

Do you usually use mods on your first playthrough or not? Do you use them in the later playthroughs or dont use them at all?

I tend to use them on second or third playthroughs (or beyond) normally texture based, minus fixes and added items etc. I only use them on the first play through if they fix what i see as a major bug but that doesnt happen often :) And of course some games do not require mods and are fine as is so a mixed amount.

I use content adding/changing mods after I've finished the game.

On my first playthrough I use graphics improving ones(if needed ofcourse :P )

depends what type of game it is and how old it is, i will never use a major mod usually only one that tweaks the look of something no gameplay ones.

I just started my first playthough of Stalker: SoC with the 2009 Complete Mod. I hope I'm not ruining any experience with modding on the first go but it seems to be worth it so far. Usually though, I dont do mods first time playing.

Depends, I usually play the game without mods first to experience the game the way the developer wanted me to. However when the developer's vision of the game requires mods (i.e KOTOR II) then I'll play it with mods.