(fully We have an only child BY CHOICE and we have no regrets at all She is 17 now and we have enjoyed each stage as it came along.
You have to do what you feel is right for your family and not take into consideration of all the pros, cons, and jabs that happen.
There are many very well adjusted only children who are not scarred by not having siblings. etc and are fortunate to live in an environment of positive, stable and secure family envoronment where they are enriched via the schools. added instruction, travel, etc.
It is a personal choice. We have no regrets whatsoever. Our daughter has her choice of colleges to attend,( fully funded by us plus her grades are at one of the highest levels) and she is fully capable of making good decisions because she has beeen raised in a family high on entreprenurship, dedication to business, and work ethic.
You simply have to figure out what is best for you. We would have it no other way. We provide for our daughter, she works for our company to learn how a business is run, she loves being independent.
No one should judge you or should you be pressured to have more than one if you are not completely comfortable in your situation.
To this day, I have family pressuring me to have another child and they don't "get it " that hubby and I are completely fullfilled with the blessings we have.
Best wishes.