Firstly, Happy New Year everyone. Whatever you want being locked up, may it be even better

As some of you know, I am new to my journey and have started with a CB6Ks copy. I have had lots of help and suggestions on how to get use to it and make it more comfortable for our 3 month trial period. So thank you.
When I was looking at devices, I noticed there are some metal cages that also plug into your urethra.
Now I have a problem with even the thought of this - it just makes me go squeemish

My question is, what is it about having something inserted in your penis makes it feel nice? I guess if you are locked up 24/7, then it stays in too. does that cause problems? What is the feeling you get. I guess I could be losing out here, but I just want to understand better. It probably will never be for me, but I'd like to know from you guys, what it is about it you like.
Thanks again.