I was born there, moved away, came back and lived there for 10 years: pluses and minuses.
Brother is still there now with kids.
IF, big If, you live near the dart / tram (luas)commuting is is fine. Driving is worse than London(some folk I know drive 90 mins each way from the suburbs). Schools can have a long waiting list, ther's no standard medical cover really (join vhi/bupa and expect to pay top dollar). Theres no real mountain biking apart from a few specific bits. Salaries are
higher but the cost of most things is way WAY higher than the uk. EG food(1.5x, drink (2x), car insurance (3x), car purchase 2x, ……).
You will prabably have a great time but its as expensive as somewhere like Italy (eg a pizza in dublin is dearer then in the best place in rome), and your kids have to be driven everywhere. If you and your wife are working you are probably not entitled to ANY health care (car crash, dentist emergency, pregnancy….). You can get vhi but when it comes to claim ypre in for more shit and stress than any insurance you ever had to deal with.
To us that's a ball breaker. We grew up with that reigem so it not so mad to us, but to folk that didnt its a real hassle.
Any questions, get in touch. Slainte!