Nacewa will turn 31 this summer but has decided to call time on his playing career for personal reasons as he wants to bring his three daughters up in New Zealand.
And despite conceding he will miss running out in front of the home faithful at the RDS he is adamant he has made the right decision.
"I told you I did want to retire here and I'm happy with what I've achieved here at Leinster, and that's the main thing," he told the Irish Times.
"The environment is special and I want to come back here in 20 years' time and watch games at the RDS and wear a Leinster jersey, and I'm happy with that.
"It's a different environment in Auckland but I've loved my time here at Leinster and I think playing with the quality of players here has made it that much more special.
"In 20 years' time I can tell everyone I played with Shaggy and Drico and Girv. They're all guys that I always admired and I've had the privilege to play with.
"The fans here, I've always said, are second to none. They're the most passionate fans that I've been around and the RDS is a special place."
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