I'm not remotely bothered one way or another from a doctrinal/religious point of view.
But there might be some practical difficulties - with living accommodation for example - because everything is set up based round single men with no ties.
It's not like the C of E where the vicar is paid a salary - priests just get a stipend, which isn't enough to support a family.
Again unlike the C of E where a vicar can find a parish and "settle down" as long as they like, Catholic priests can get moved around a lot. Which might be disruptive for schooling etc, or the spouse's job.
Accommodation usually comes with the job
but what about if a priest has a big family (after all, they shouldn't be using contraception
) and can't be housed in the rectory (or whatever it's called). Does the Church have to buy a huge new house near the church? Or make them buy their own house? Bit unfair if everyone else gets theirs free, and anyway, priest don't get a salary.
What about parishes that have multiple priests because they are so big and busy - unmarried male and female priests all living together in the same house? Or a priest with a family having to live with a couple of extra single priests?
The catholic church looks after priests after retirement too - often allocating them to a parish with other priests, or to a Priest's nursing home if necessary - would they have a responsibility towards a priest's spouse and children too?
It could end up a logistical nightmare trying to allocate them all to suitable parishes.
Not that these things can't be worked out, but it does need a bit of thought - an potentially a total change of organisation and procedure, and maybe a lot of money too.