Rahulan,
Having a drink driving conviction makes getting car insurance more difficult. In some cases, insurers may not be ready to quote because the risk factor associated with you is a lot higher than the average driver. Quotes that you are able to get though reflect very high premiums and you wonder whether it's worth going for it or not. However there are now specialist insurers who can provide cheaper convicted drivers insurance depending on the severity of the offence they had comitted. You will need to check these specialist companies and give as much details as you can so that they can give you an accurate car insurance quote instead of going to mainstream insurers who cater mostly to drivers with clean driving licences.