I dont know how valuable your current property is and what type of mortgage you have etc., but it would be fair to say that the equity repayment on a typical Dublin property would not be insignificant per annum - €10k per annum would not be unusual even if the mortgage is only a couple of years old. This means that by renting, you will have e.g. €10k per annum less money when you go to buy another property in the future.
It would want to be a very expense house to be paying off EUR 10,000 in equity during the first few years of the mortgage!
The average house price nationaly is EUR 306,619. Taking a 35 year mortage with an interest rate of 4.5% on this... for the first two years, less than EUR 4,000 will be paid towards the equity per annum.