What do you think of theabout marriage between ones with no siblingsly children?

Since there is noI do not have siblings andor cousins for me, I will be alone if my parents pass away.

Now, I am looking for a partner to avoid such a sad future, and givputting importance ton the presence of siblings.

I am well aware that there are more important things to consider such as her personality, the way ofhow she spendings money, and her career.

Nevertheless, it is still a important for me.

While families with only one child have accounted for about 10% of all couples until 20 years ago in Japan, the ratio reached 20% recently.

What do you think of the marriage between onespeople with no siblings?

'People' is more formal than 'ones', and mostly used in conversation, not writing.
Additionally, 'ones' is typically used for a specific group of people, like "we are the ones who made dinner".

Since there isI have no siblings andor cousins for me, I will be alone if my parents pass away.

Note: I don't know where 'cousins' came from, I don't see it in the Japanese version.

I am well aware that there are more important things to consider such as her personality, the way of spending moneyhabits, and career.

"spending habits" is a common phrase to describe how a person manages their finances.

Nevertheless, it is still an important factor for me.

ALTERNATIVE: Nevertheless, it is still important for me.

Adding 'factor' conveys that having siblings adds measurable value to the relationship.

In addition, whether havingto have babies or not is up to women.¶

Even if both of a couple hopes to have them, it still depends on luck.

'a couple' refers to both people together.

Adding 'still' sounds more natural, but it is optional.

What do you think of the marriage between ones(two) people with no siblings?

Since there isI have no siblings andor cousins for me, I will be alone if my parents pass away.

I am well aware that there are more important things to consider, such as her personality, the way ofhow she spendings money, and her career.

Her siblings might bring troubles regarding care for her parents and thany possible inheritance.

Nevertheless, it is still a important for me.

While families with one child have accounted for about 10% of all couples in Japan until 20 years ago in Japan, the ratio reached 20% recently.

Considering my age, it would be difficult to have more than 2two children.

In running text, we typically spell out numbers less than 10.

In addition, whether havingto have babies or not is up tohe womean.

Even if both members of a couple hope to have them, it depends on luck.