I've only been using Unix for about 10 years, but I quote arguments to grep out of habit. I find it easier (probably mental laziness) to just single quote every

I've only been using Unix for about 10 years, but I quote arguments to grep out of habit. I find it easier (probably mental laziness) to just single quote everything I feed to grep, rather than mentally parsing what I'm about to type and deciding whether it requires quotes. So basically, I've substituted an extra two characters for my ever decreasing mental acuity :)