Mark Hamill ought to curse Lucas for being the birth/death of his acting career.
Actually Mark Hamill went on to have a good career in voice acting and acting in video games (Wing Commander series). You may have heard one of two of the voices he can use and not know it. Mark Hamill voiced the Batman The Animated series Joker from all the way back to 1992. And continued playing the Joker all the way into the Batman Beyond Movie and the Justice League series.
To this day, the Joker laugh that Mark Hamill can do still sends chills running down my spine.
How so? Hamill, Ford, Fisher, Daniels, and others were given percentage point$ on the profits of the Star Wars Trilogy.
Lucas, in short, made millionaires out of the lot of them.
Mark Hamill is doing what he enjoys now, acting (granted, a lot of B Movies, but...), being with his family, doing voice overs, character voice work, and traveling quite literally the world over to Conventions.
Trust me, as far as Hamill is concerned, he has nothing to curse Lucas for.
I should be so lucky to have it as well.