Why do I feel guilty about letting my baby sleep alone?

Vi

My son is 10 months and for the past month and a half he's been sleeping by himself in his own room. Before that he would sleep half the night in his playard in my room, and half the night in my bed. While I should be ecstatic that he's sleeping on his own and sleeping longer, I feel so guilty. I miss cuddling with him in my bed. Is this normal or am I overthinking this? Has anyone else experienced this guilt?