Am I wrong to be annoyed?

My husband has been sleeping through the night for the past week or so while I've been the one waking up several times with baby (she's 5 months). I'm also up around 7:30am while he sleeps in until 9. I just spent 1.5 hours putting my daughter to bed. After an hour or so, she woke up so my husband took over. Well 20 minutes in, I heard him snoring like a freight train while holding her in the rocking chair! I was so angry and upset that he fell asleep with her! How am I able to stay awake on less sleep than him? Was I wrong to get upset? I don't know...maybe it's my exhaustion and it's really not a big deal...