The Institute for Public Policy Research has found that couples are much more willing to put off having children, sometimes for good, to maintain their quality of life and pursue a career.
We also want to hear what you think
click here to go straight to our e-mail form
The research, commissioned by the cosmetics firm Lever Faberge, has found that people are putting off having children.
While nearly 90% of those in their twenties said they wanted children, many in their mid thirties were still putting it off.
The researchers believe that thirty-somethings are thinking twice about their original goal of having children, because of the sacrifices involved.
They point to a "mother tax" in which women continue to bear the brunt of having children, in terms of life-style, career and income.
They also point to growing divisions in society between parents and the childless.
Those with children can envy the lifestyles of childless couples. While those who have not had children feel that parents get preferential treatment.
Tell us what you think, using this form You may get an error message - but we are still getting your e-mails without a problem
Disclaimer: The BBC may edit your comments and cannot guarantee that all e-mails will be published.