I've done the same thing before, and only recently have regretted it. It's much easier and less uncomfortable to accept what they're offering, especially if it's the amount you were anticipating, but if no negotiating was required, you definitely could have gotten more. Yes, you got what you were looking for, but could you find something to do with $5000/year more? Definitely.
I find most people (at least in the US) are uncomfortable negotiating, since the only times you do it seriously are when getting a job and buying a car. So long as you don't resort to the "Fuck You", negotiating is a professional thing to do and all will be forgotten once you come to an agreement and start the job.
I find most people (at least in the US) are uncomfortable negotiating, since the only times you do it seriously are when getting a job and buying a car. So long as you don't resort to the "Fuck You", negotiating is a professional thing to do and all will be forgotten once you come to an agreement and start the job.