Somebody has probably told you that a VPS is the grown up choice. Here is how to work out whether it applies to you, without anyone selling you anything.
Question One: Does Your Software Need It?
Do you need to install something a shared platform will not run? A specific service, an unusual PHP extension, a background worker, an application that is not PHP at all?
If yes, that is a real answer and the rest of the questions do not matter. If your site is WordPress, or a static site, or a standard shop, then no.
Question Two: Are You Actually Constrained?
Not "might I be one day". Are you hitting limits now? Are pages slow at peak in a way that traces to the server rather than the page weight?
Most people who believe they have outgrown shared hosting have a heavy homepage and an unpruned plugin list. That is worth checking before moving, because it moves with you.
Question Three: Who Patches It?
This is the one that decides it. An unmanaged VPS needs someone to apply security updates, configure the firewall, renew certificates, watch disk space and respond when a service dies.
If that person is you and you enjoy it, excellent. If that person is "we will sort it out", you are choosing a machine that will be current for three months and then quietly rot. That is genuinely worse than shared hosting, not better.
Question Four: Is It Cheaper?
Compare against a managed VPS, not an unmanaged one, unless you are truly doing the management. Once you add management, the cost usually lands well above a good shared plan. Sometimes above the next tier up as well.
The Summary
Need specific software, or genuinely constrained, or have someone to run it: a VPS makes sense. Otherwise a well run shared account will serve you better and cost you less attention.
We sell both. We would rather you were on the right one, because the wrong one generates support tickets neither of us enjoy.