Is it true that masturbation reduces erections (spontaneous or otherwise)?

And if it does, is this a bad thing?

In the short term, generally, yes – an hour or two after masturbating, most guys are less interested in sex and are less likely to get an erection, either spontaneously or through visual, physical, or mental stimulation. This isn't bad at all, because it's temporary and has no lasting effects. As your body "reloads" and prepares for its next ejaculation, your tendency to get an erection returns to normal.