Chiefly because if you mess up just one letter in a word you can change the entire meaning. For example: Compliment vs. Complement
Compliment: (from dictionary.com) an expression of praise, commendation, or admiration.
Complement: (from dictionary.com) something that completes or makes perfect.
Where this distinction might be important? Your online dating profile.
“I’m looking for someone that compliments me, wants to have fun, likes that last minute decision to take off for the weekend, wants to go for a drive just for something to do.”
I mean, who doesn’t love receiving compliments? But it seems to me that 9.4/10 people are just NOT that honest and forthright in their profile. At least wait until you get to the signing of the contractual obligations part of your Fifty Shades-esque relationship before demanding hourly compliments.
Spelling and grammar: That shit’s important, y’all.