After 50 years of life on this earth I personally know of no really happy marriages, honestly.
The ones I know are valiant warriors who are bearing it out despite the personal pain and suffering it causes.
There may be exceptions out there of course, but I'm only talking from personal experience.
Many children bring as many sorrows and sufferings as they bring earthly joys even in the best of circuмstances.
This is not to say that marriage and childbearing are not gifts from God with many joys,
but they are HIGHLY overrated as providers for happiness.
It's common for a spouse to feel acute loneliness in the marriage bed
and for a parent to feel acute loneliness in their living room surrounded by their family
simply because they do not share the same faith (and goals for sanctity)
even if they attend the same church.
This phenomena would be very hard for a single person to imagine
but it is real nonetheless and probably experienced by many at your chapel.
Some of the advantages to single life include:
the ability to think clearly because of a life of silence.
Often in a large family you are not able to complete a sentence much less have a moment of silence to complete a personal thought.
This makes it difficult to think through and process emotions as they arise and respond with reason and grace
much less contemplate and grow in spiritual matters.
There is so much more that can be said...
The "grass is always greener" is very, very true!