As a concept I would welcome a safe affordable male contraceptive and would use it if appropriate.
I would say that I would definitely evaluate the option very carefully. Especially in a committed relationship. Sometimes female birth control can bring benefits beyond just birth control, along with its drawbacks. My partner suffered from severe period cramps at a point in her life, where the birth control she used suppressed that. That said, it would actually be positive to have the option of a male contraceptive in a relationship. We share the pleasure and the responsibility. In the end, the safest option with the least side effects will probably win out. If that is a male contraceptive, so be it.
Outside of a committed relationship, condoms just makes more sense. I cannot imagine taking the risks associated with sex and not taking any precautions for it. Then again, my early 20s was spent in a country and area with a high prevalence of HIV, so not taking chances is ingrained due to that. It would also depend on just active a sex life we are dealing with.