If that's what you want to do, that's what you should do.
But I'm not sure I'd recommend it. Imagine replacing "watch TV" with "gamble on horses" or "drink beer".
I kind of wish you'd said "What if I just want to chill and tend to my garden all day?" instead...
Look, I spent many years of my life quite literally telling people what they needed to do achieve their goals and trying to keep them from making short-term decisions that were quite obviously poor.
"Don't get back together with him, I guarantee within a month he'll leave you again and you'll be screwed." "I know you hate your job, but stop cussing at your boss until you find a new one!"
I have a pretty solid track record of being right. I used to judge people pretty harshly when they made obviously stupid life decisions that turned out to bite them in the ass, but I realized all it accomplished was making me incredibly cynical and untrusting towards anyone to do the "right" thing; whatever I happened to define as "right" that is. Now, I just live and let live. As long as someone's decision doesn't affect me I am not going to recommend against it. I'm also not going to make distinctions between "drinking all day" and "tending to a garden all day" -- they're both equally acceptable to me. Drinking all day while tending to a garden sounds like it could prove entertaining.
As you point out, life's too short to spend it being cynical and unhappy.