I have an only, but buy for 2 nephews (both in the same family). I have no problem with it - I love them, and want to give them a present. It's not about getting an even exchange, it's about gifting the people that are important in my life.
Several of my siblings have no children. If anyone had a gripe, it'd be them, because they have to buy for 3 and get "nothing" in return. Except love - which is what it is really about after all
We also don't worry in our family about things having to be even monetarily. You buy based on what you can afford. It's not an accounting exercise.
Now, outside of the family is a slightly different story. I have various kids I "have" to buy for that I don't really have a relationship with. I'd rather not do it, but it is what it is and not doing it could cause some bad feelings - buying a few inexpensive presents is worth the cost of avoiding that. I bargin shop on those to the max, trying to find items that are good match to the child but are inexpensive. I put some thought into the gifts, but I'll be honest and say not NEARLY as much thought I put into my nephews presents. But it's still not an exercise in trying to make things even between the families - each family does what they can and we don't keep tabs.
Several of my siblings have no children. If anyone had a gripe, it'd be them, because they have to buy for 3 and get "nothing" in return. Except love - which is what it is really about after all

We also don't worry in our family about things having to be even monetarily. You buy based on what you can afford. It's not an accounting exercise.
Now, outside of the family is a slightly different story. I have various kids I "have" to buy for that I don't really have a relationship with. I'd rather not do it, but it is what it is and not doing it could cause some bad feelings - buying a few inexpensive presents is worth the cost of avoiding that. I bargin shop on those to the max, trying to find items that are good match to the child but are inexpensive. I put some thought into the gifts, but I'll be honest and say not NEARLY as much thought I put into my nephews presents. But it's still not an exercise in trying to make things even between the families - each family does what they can and we don't keep tabs.