OT - WAY off topic: How many felonies before prison time?

Ok, just curious here...How many times does someone have to plead guilty to actually get jail time on Class D Felonies? BD plead guilty to class D felony forced residential entry in January 2011, guilty to class D Battery in November 2011 and has 2 D felony counts of Intimidation for which he goes to trial in February from June 2012. They dropped 8 other charges on 5 arrests and kept these 2. For his guilty pleas, they dropped a total of 5 charges. These do not count his class A misdemeanors. All of his sentences have been home detention or susepnded sentences. When do people actually go to prison? BM had a class D felony in May 2011 she plead guilty to and is now charged another one from June 2012. Neither has paid fines, court costs or done community service for their crimes in 2011. When does the court system actually hold them accountable? Is it just me or is it the habitual offenders that get home detention or probation and the good people that just screwed up get the book thrown at them. Told ya it was off topic.