Conditioned to stay Limp ?

[Sub-Cocksucker]

First a quick background about me.
For stead my first cock when I was 19 it changed me forever addicted to cock ever since.
Had my first true Dom in my mid twenties which lasted about a year.
Pretty much completely broke me and threw me down the sub rabbit hole.
Had some on and off relationships with other dogs over the years and sucked off crazy amount of strangers cocks.
Now in my mid 40s I have two Doms that I service on a very regular basis.

I would never get hard while being penetrated but what always get hard while sucking cock.
I have noticed that especially being used as often as I am between my current two doms, 
that my balls will slowly ooooze and empty (ive never full on CAME from anal)
Once they send me home, my balls are empty, but Im still HORNEY, but alot of the times could not jerk off, since I would stay limp.
One of my current Doms hates when I get hard, and any time I barely get hard he will beat and squeeze me balls till im limp again.
He has been very strict about this for about 6 months now, and lately, I cant get hard at all.
I am, well, was, a chronic masturbator, so I have mixed feelings about this.
Its frustrating, but I cant help but also be turned on by the thought that, these Doms could have conditioned me to be this way?
I honestly dont think its a case of simple ED, has anyone else experienced this? 
Have I actually been conditioned and trained to be so sub that I now stay limp?

[Hungryforbbc]

So I can relate- I used to get hard and jack off when I was sucking or even when I was getting fucked. I experienced my first anal orgasm early in my sexual journey and had gotten used to not having it with most of the tops who fucked me so I guess it was my way of getting off physically at least having the male orgasm. Pretty much settling on mediocrity. I did chase that incredible feeling of cumming hands free and soft and trembling in waves of pleasure that come with the anal orgasm. Having masturbated millions of times I lost interest in the basic “local” male orgasm  that I can have whenever I want and recognized that the other was infinitely better and never looked back.

So over the past several years I’ve leaned into my true identity as a total bottom, with the guidance of a special top who not only gave me the orgasm i was looking for but also taught me to get off psychologically on serving, satisfying, taking, drinking, swallowing, submitting to my top king.  The tops I play with now are not interested in my penis at all and prefer not to even see it which helps to minimize any thoughts of playing with myself during the session.

 I now find it a non issue. I can get off by myself with a toy and don’t need to be fully or even mostly hard anymore.  My formerly impressively sized penis is getting smaller and I’m enjoying my sessions much  more now that I let go of thinking about my local penile pleasure and enjoy surrendering entirely to my top king and I always end up with a smile on my face and a quivering hole