I don't have any good reason to pack up everything to walk to town when I know I can have my food delivered to my house ( it's easier )

I'm a single mum and I have no friends, my family live far away and the only relative I have near me is my sister.

She can sometimes literally pop in to say hi and cuddle my 7 month old son but still I haven't been out to town.

I sit in the back garden with my son for abit but I kind of feel bad, is it bad for me not to venture out ?