Is anyone here an only child?

I’ve been debating on having more children. My daughter just turned 1, I have always wanted to be a mother my whole life. I absolutely love kids. I do want more, however I keep going back and forth. I want my daughter to have everything I was never able to have as a child, I want to easily get her 1st car, get her through college etc. I’m also worried about her feeling lonely , I love my siblings to death. Im just not sure exactly what it’s like growing up as an only child. Do you wish you had siblings?