Depriving my son

Am I depriving my son by not having another baby until he’s 3-5 years old? I’m getting constantly told I’m depriving him of a close sibling relationship and I’m a being selfish for wanting to focus on my career for a bit instead of trying to juggle 2 children. I also just would prefer to have my son have that one on one attention for awhile, my older brother hated us being close on age when we were younger.