a m w wrote:
It’s 2006. I’m very attached to it. Also, I’m an artist, it’s great for images, I’m going to struggle to upgrade. That’s why I’m trying to work with what I’ve got. Thank you for all your help and you are right, it’s just too old.
I totally understand being attached to it, however you will be seeing more and more limitations to owning it. Considering it's 12 and now almost 13 years old it's quite ancient by technology standards. If you have been backing it up using Time Machine or creating a bootable clone, migrating to a new Mac is very simple.
However that being said, your work applications may also be so old they will need to be upgraded too. When considering upgrading to a new computer and version of Mac OS these are factors to take into account. For example if you use a version of Photoshop that runs on 10.7.5, I can tell you it will not run on 10.13.6 (current version of Mac OS). This means you have to upgrade that application. Unfortunately when you stay stuck in time (using a 2006 computer and possibly 2006 apps) it can get expensive to get current. Staying current over time (both Mac OS and your apps) is a less painful approach.
Best of luck.