Rig building - When or Why, do you change devices?

I see some people change out gear like they change shirts & socks. Other’s less so. Though in all, many audiophiles repeatedly make component changes seemingly with regularity.

I thought I’d ask “Why, How, or When” do you determine a change in your system is necessary?

Is it all just about the money required for the moveing on or up?

Is it purely preferential?

Or is it just a “want for something different”?

Lastly, have you simply missed the off ramp for your own ‘gotta have it, gotta get it’, treadmill?

I thought this might convey some perspectives on the when’s and why’s of system building… for the newbie and the oldbees.