Is to use them with a partner.
You know what I mean. When you're on your own there is just something missing. Yes you have the sensation, you have the tightening of the muscles and ultimately the thrill of the orgasm. But are you missing the connection, the pleasure of sharing a moment, or maybe even the longevity things like foreplay, tantalising the senses with some cheeky banter, and maybe even the wallowing in the afterglow in someones arms?
Adult toys aren't just meant to be used in isolation. We are all grown ups aren't we? We've all seen and used these things before, so what's the problem sharing with a partner?
Now when I say partner, I mean that in whatever way you what that to mean. A one night stand, something casual, a regular "buddy", a relationship and even a marriage. Whatever it means to you is ok.
Feel free to express yourselves to each other without the cultural inhibitions of society. Go for it, you will be amazed at the results.