Age Regression

What we mean by age regression sadly isn't well understood by the wider public even if in the last ten years or so it has more of an acceptance by health professionals and people engaged more in the world of mental well-being.
I think the first thing we need to say is being in a child-like state of mind doesn't mean we are not cognizant that physically  we are that chronological age recorded by law and therefore governed by law, rules and to a point custom that apply to it.
To put it another way if we're over the age of majority then that does mean those things that are inappropriate  to be engaged in with an actual child still apply even if we see ourselves as being one still.
If as I did I started regressing in my teens elements of the same did come into play too even if then I was under the Minor umbrella cos somethings you may do at say sixteen aren't appropriate to doing around younger kids either. 
It's no more a route into hurting kids than medicine, teaching, or being involved in any activity that may involve working with kids regardless of some of the ignorant comments you may read might suggest because boundaries still apply.
The second thing is there's no magical age of transition from play to 'serious' activity alone with many of things regarding social roles being formed out of economic necessity during the Industrial Revolution and the tendency in agricultural communities for everyone to pitch in doing what they could taking into account age to gather the crops in or work on garments to be sold to raise money.
The discovery of Childhood as we understand it today goes back to what Britishers would call the Victorian era, that's to say from the 1830's onward and the reaction to the previous eras seeing children as mini adults, being dressed as such, having to work and not being able to have time alone from adults to play.
If you look at the common driver of much of the legislation during this era it is to gradually reduce the hours and ages children worked, to provide for education and encourage a separate social life  for children alone through things such as play or crafts.
That space is created and then filled by children themselves.
Similarly for those of working age more free time has been made by law and custom so that even if of necessity we may work (and most of us do) then we too can play, explore or make things.
Age Regression is more a question of going back to that point in our lives as children  and acting on those feelings and interests we had and for a good number of us still have that we feel most comfortable with. 
The only difference is some of those things are more associated with being a child even though we all know adults must be involved as they design toys, test out construction kits or even get paid to play with Lego.
For a good number of us we find going back to more of our past lives therapeutic, putting in a place mentally we feel more comfortable, at one with ourselves being able to BE ourselves and for some work through emotional issues too.