Flexibility? Posible not an issue if they are married with kids at that age but most aren't. Homeownership ties people down to a certain degree, you can't just give a months notice and hop on a plane if a life opportunity presents.
It also comes with maintenance and management responsibilities that might not be fun for a 20 something year old.
Might still be worth it but there are downsides.
I know absolutely nobody who gave a month's notice and hopped on a plane to take advantage of a life opportunity. Not one single person. Zero.
But I have known homeowners who moved abroad and could later move back because they owned a home. They had a choice.
There are downsides to everything.
Not any more. There are very few circumstances where landlords can terminate a tenancy and there are lengthy notice periods.
It's sweet that you think that landlords generally rigidly adhere to the law.
The "very few" reasons are plenty. Landlords can evict, do a minor renovation with grant support to get around the RPZ limits, then double the rent when they let it out again. Happens all the time. The fact that it's perfectly legal is of no help whatsoever to the tenants affected.
Or they can invent a family member who wants to move in. Say they're selling. Or actually do those things.
And a decision from the RTB in favour of the tenant is worthless if they don't have anywhere to live. Even assuming the landlord pays.
And then there's the extortionate rent levels, which are equivalent to a mortgage and a half if you're lucky.
And that's ignoring the many people who rent a room rather than a property and have no security of tenure whatsoever.
So yeah, 1 small step from homelessness. Ireland is an awful country for renters.