How often do you change your curtains?

Two windows downstairs with matching curtains. One window is 10 x 6, the other is 15 x 6 and the floor length curtains are drawn closed in winter. They are about 5 years old and have been dry cleaned once. Couldn't afford to have a set to change for summer but it would be lovely to do so.

I'd change the curtains if needed/wanted. Why not if you want to? I do change one set winter/summer for a different look rather than warmth. Otherwise tend to change when I get bored with them. Having said that we have one set in a bedroom that belonged to my DMIL. No idea how old they are but they were at a window when I met her 48+ years ago. No, they don't have holes! We love them. The rest of the curtains are less than 3 years old. No rules with curtains. Just do what suits you.

I don't have separate winter and summer ones but always give all my curtains a wash in summer.
If you are fed up of your curtains, of course you should get/make new ones. It will cheer you up.

My MIL did the same before double glazing
I have changed mine in past to suit the decor
Having said that if they were particular favourite then fitted decor round them.
I have blinds now so curtains left open.
This does mean less material required, so much cheaper

As you can make your own suzied why not make them any way + put them up. If anything like my DH prob won't notice for a week

No I didn't when I had curtains but now I only have blinds at all the windows.