Edging can make you experience very high peaks of pleasure, which can help you connect more with your partner.
Practising Edging can make you last longer.
But don't practice it for too long, like an hour or so, although this can be subjective.
Edging can make you enjoy intercourse more and eventually give you more intense orgasms.
You have to know your limits to achieve maximum pleasure, if you do too much Edging you may have a hot but weak orgasm (if you know what I mean).
Like everything else that is part of you, explore it, improve it and have fun with it.