I don’t use one, it’s unnecessary. Keep your system light, use only free software and utilize some of your common sense and you’ll be all right.
This one time my brother had his pc(winblows) infested just by plugging in a flash-drive, seriously, just that!!. I hate proprietary software.

All the friendships I’ve had have died away. At this point it’s not even worth the trouble. Have fun while it still lasts.

I remember the first time I tried to end my life so well. I was ready to give it all up, f*ck the pain y’know. I’ve never spoken about it with anyone close to me, I don’t think that I ever will.