Dear service user,
Thank you for contacting Healthcare magic.
I read your question and understand you concerns.
The volume of semen, consistency of semen, size of testicles has nothing to do with sexual performance and sexual satisfaction. So stop thinking about all these stuff.
Masturbation in private or with a partner is generally considered a normal and healthy part of sexual enjoyment.
Masturbation is not a disease hence no adverse effects as mentioned in you questions. All these are myths.
Masturbation is akin to sexual intercourse. What penis does in vagina during sexual intercourse, same it does during masturbation in your folded palm. This is a natural activity and I would say a 'healthy' activity and does not either affect or deter sexual performance.
Lack of knowledge leads to
anxiety. I recommend counseling with
psychologist.
I hope this will help you.
Feel free to ask again if you want.
Warm regards.