For Mary Colleen Roberts, the decision to become a lawyer in the 1980s was a sensible one.“It’s crazy to think back when I was thinking about becoming a lawyer, it was because I was looking for ways to support myself, because I was going to live a nontraditional life,” Roberts said. “That I could be in a marriage and be supported by a [same-sex] spouse in 1983 or 1985 was so far out of line with what the reality was back then.”More than 30 years later, the 58-year-old is a Cook County circuit …