Draw reins for horses: should you use them?

good physical or psychological place and what I did next.
Fragility through the reins
The first time I rode a horse in running reins I was trying a horse to buy I felt a sense of fragility through the reins and I didnt like the lack of conversation I had with the horse. I was still in Pony Club and terrified of the running reins. I barely touched them but fell in love with the horse. We bought him and he stayed with us his whole life. At 15 I thought Id go straight back to basics and put a snaffle bit on with a plain noseband. There followed a terrifying few months of being unable to stop or steer.
This horse formed a strong bond with my mum and as we didnt have an arena I had to hack. The only way to hack him safely was for him to follow my mum! In open spaces he would brace and then spin. My younger self had no idea what to do about this apart from ride circles and transitions. I had a few lessons with a local trainer who introduced me to the basic principles of leg yielding and I started spiralling in and leg yielding out on a circle.
Positive effects of draw reins
This experience led to me blaming the previous use of draw reins for every problem and challenge my horse had. So it took a lot to convince me later on that I could use draw reins in a positive way for horses. I did not ever want to be the rider that did my horse any harm.
I was honoured to be asked one day to cool down a dressage horse who was rather bigger than I was used to riding. He was powerful happy and that day he was wearing draw reins. I did not know what to do! My instructor helped me through the feel of trotting around in the snaffle rein with a correct contact and gently holding but not using the draw reins. It was an honour and a joy to ride that horse and I was elated to know we had good communication. Fears of breaking him disappeared and I was thankful for the lesson in feel he gave me.
Fast forward several years I was given a standardbred trotter to school and promptly presented with draw reins. Conformationally this horse had a rather short neck