Not wanting a certain birthday month

Me and dh are disagreeing on this so I thought I'd ask.
​Dh doesn't want to ttc this cycle as my edd would be the same month as my 3years birthday and he thinks it's unfair to our lo. After 3 months of ttc and not getting a bfp I don't want to take a break for any reason.
​Is it selfish to not want to take abreak? Would you mind if your children have had a birthday close together? Or are you and your siblings close together and how did you feel about it? 
​I