I'm in the exact same position as you Gustov. I get the train to work, and don't use my Clio at all really. If we go out we use my GFs Mini. I went 6 weeks without moving the Clio recently.
But it depends what you want to do with it. I contemplated taking it off the road or selling it, but decided I should track it and see about keeping it as a toy. Glad I did as its a right laugh. I don't quite know where all these sky high insurance quotes are coming from, I just renewed my insurance at £467 for 5,000 miles a year, and protected my 6 years NCB.
Kenai also has a good point, you have spent a lot on it. Leaving it as is will help.
At the end of the day though, you need to look at why you own it. If you want it as a weekend toy and a bit of a laugh, or want to keep it in good condition and spend time and money on it, then you must accept that its going to cost. If however you want it as an everyday car only then you have to question its suitability. If theres nothing about it or that you are doing with it that means you 'need' it, then maybe you need to get rid.
For example, the only reason I still have mine is to track it. I expect the fact he auto tests it is a reason Mike got his instead of just some normal runabout, alexisonfire has his as a stripped track weapon. Then on the other side SS likes to spend time and money on keeping his looking mint. If your Clio is a hobby, keep it, if its 'just your car', then maybe its not right for you.