If you're breathing, you're selling. No matter what it is, your opinion, a product, a service, whatever... You're selling, and you need to be asking for the close. That's how you get what you want, and give what you're wanting to give. It's an exchange of value.
I was in the market for a printer, and I set it for the easiest sale possible. I told him exactly what I wanted, and what was the most important thing.
Four printers later, I was shown the one that fix the problem I was trying to solve.
That salesperson, I cannot honestly call him that, never asked for the close. I left printerless...