It usually comes from someone who loves your child. A grandparent, an aunt, a close family friend. The sheets are being changed again, everyone is tired, and someone says it gently: why not just put a diaper back on him?
The advice is almost always well meant. Once a child is past 4 and daytime toilet training is behind him, it is also the wrong advice.
Why the suggestion sounds so reasonable
The person offering it is solving the problem they can see. Wet sheets, laundry, a tired household, a child who wakes up uncomfortable. A diaper removes all of that by morning.
There is often something else underneath it. Bedwetting runs strongly in families, so the relative giving the advice may well have been a bedwetter themselves, or raised one. Their experience is that it ended on its own and nobody made a fuss. From where they are standing, waiting is the kind option.
The short version on diapers
We have covered the clinical side of this question in detail already, in should my child wear diapers and should we use diapers.
In brief: during alarm based treatment a diaper blocks the very mechanism the treatment depends on, and for an older child who is not in treatment it quietly signals that nobody expects him to manage this. There is one genuine exception, which is nights away from home, where a pull-up is reasonable insurance against a high social cost.
What those articles do not cover is the part most families actually struggle with, which is what to do when the pressure is coming from inside the family.
Waiting is a bet, not a safe default
The argument sitting behind the diaper suggestion is usually that he will grow out of it anyway.
Some children do. But a meaningful share do not resolve on the timeline their families assume, and some carry it into adolescence. Choosing to wait is a real bet on a particular outcome, not the cautious middle path it appears to be. The years spent waiting are not neutral for the child, even when nobody comments on them.
How to close the conversation without a fight
You do not need to win a debate about enuresis at a family dinner, and you will not.
What works is closing the topic rather than arguing it. Something brief and already settled: “We looked into it, and we are handling it with someone who treats this. Diapers would get in the way of what we are doing.”
That sentence does three things. It signals a decision has already been made, so there is nothing to reopen. It makes clear you are not ignoring the problem, which is usually the real worry behind the advice. And it does not invite a discussion of the evidence.
If the person pushes, repeat it rather than expanding it. Most people let a topic go once it is clear there is no opening.
Have the conversation away from your child
This matters more than the wording. A child who overhears adults debating whether he should be back in diapers takes away only one part of it, and it is not the part where you defended him.
If the subject comes up in front of him, move it. Saying you will talk about it later is enough.
What we tell parents
You are allowed to decline advice from people who love your child. The person suggesting the diaper is trying to reduce the suffering in your house tonight. You are trying to end it altogether. Those are different goals, and only one of them is yours to pursue.