Should Pacquiao retire since I don't think there is anyone left for him?

I think Pacquiao already proved that he is the best boxer and he is the greatest boxer in the 10 years. He walks the walk and use his fist do the talking. He is a true warrior and has my full respect. Pacquiao to me is the second favorite boxer in Puerto Rico where I'm from just behind Cotto. I don't think anyone comes close to beating him around his weight class. Mayweather is the only challenge but he is gone now. But with the long layoff and age catching up i pick Pacquiao to beat Mayweather eventhough earlier before I said Mayweather beats Pacquaio because of the style! I don't think Pacquiao should fight Martinez because Martinez is two weight division above and Pacquiao is not even a true welterweight to begin with. Martinez calling out Welterweights made him looked bad in my opinion.