+ infinity
I can vouch for that from personal experience- I was unplanned and an intrusion by all accounts seeing as my parents were divorcing already.
My mom didn't want me around in the house, especially when she had friends over to smoke dope with.
Thank God for my grandparents who took me every weekend till I left home at 14.
If you don't really want kids please don't just go along and have them.
Though, my DH spent every Friday night at his grandparents while his parents had a date night. THey focused on their marriage and made it important and he told me it made him feel secure in his family.