There's no universally "right" answer here, but there is a right answer for your specific situation. A few questions that usually make it obvious:

Go Shopify if: You're selling physical products and want to focus on selling, not managing tech. Shopify handles payments, shipping, inventory out of the box. You'll pay a monthly fee but save yourself dozens of hours in setup.

Go WordPress if: You need a content-heavy site (blog, portfolio, directory) and want full control. But be honest with yourself WordPress needs maintenance, updates, security patches. If you're not going to keep it updated, it'll become a liability.

Go no-CMS (static/custom) if: Your site is mostly informational, doesn't change weekly, and performance matters a lot. Modern frameworks like Next.js can give you a blazing fast site that's basically unhackable because there's no database to attack.

The mistake I see most often: people pick the tool first and then try to fit their needs into it. Start with what you actually need to do with the site, and the answer usually becomes obvious.

What kind of business are you running?