The time he took to publish is not because he was a 'slacker'. British society was very religious at the time and coming out with evolution was going to cause q

The time he took to publish is not because he was a 'slacker'. British society was very religious at the time and coming out with evolution was going to cause quite the controversy. Which it did. So he wanted to gather as much evidence as possible and maybe shied away from the attention it would gather from religious leaders.