Your 8 year old boy won't potty train because he loves his diapers and prefers to use the diapers instead of the toilet.
To your 8 year old son the diapers are comfortable even when wet or dirty and he enjoys them.
Eventually your 8 year old son may potty train and no longer want diapers but even if he doesn't the diapers are not hurting him and it's okay to let him stay in diapers as long as he wants too.
Just make sure he stays clean and changes his diaper often enough and showers often.
You can still talk to him about getting him to use the toilet but he may or may not give into it.
Regression in potty training 8 year old is the 8 year old child's sudden neglect of potty practices such as peeing in their pants, pooping their pants, desire to return to diapers and not going to the toilet.
Regression in potty training is normal and having a new baby in the family or the 8 year old or other child simply wanting to be the baby or just wanting to wear diapers can cause potty training regression.
You could give into the 8 year old or other child and put them back in diapers for awhile and they may get tired of it or they may enjoy it and want to be kept in diapers.
Boys should be potty trained sitting down and then eventually they can learn to stand up to pee.
In the beginning they should be potty trained even with peeing by sitting down until they can learn to aim and then you can teach the boy to pee standing up.
Boys are harder to potty train than girls and most boys take longer to potty train than girls do.
The reason girls are easier to potty train than boys is because girls tend to be more advanced in their language and physical development and these skills help the girls potty training move forward easier.
Boys tend to be less advanced in language and physical development which prevents the potty training from moving forward as it should.
The most common age to potty train boys is between the ages of 2 years old to 3 years old.
Most boys are potty trained by age 3 although some boys may not potty train until age 3 and 1/2 years to 4 years old.
Some boys are potty trained as early as 18 months of age but even when you begin potty training at 18 months the child still needs lots of help with using the toilet.
When it's all said and done even starting as early as 18 months the child is not fully potty trained and able to use the toilet independently until age 3 to 3 and 1/2 years old.
If you wait until at least 3 years old the boy will have better bladder control and be more able to get to the toilet on their own and pull their pants up and down and wipe without much or any assistance.
I've always waited until my kids were 3 before even beginning potty training and went straight to underwear without using pull ups.
Once they were 3 my kids both boys and girls all potty trained within a few weeks to a few days.
When you potty train as early as 18 months or under 2 years to 3 years old it's more the parents being trained to take the child to the toilet and remind the child to use the toilet.
If you potty train before 3 you will be dealing with lots of accidents which means in reality the child is not ready.