I binge watched all 5 seasons and couldn't put it down. Because it's CW and most characters are young and I really needed something to watch, I gave latitude and tried not to be too critical of character inconsistencies. But on reflection, I give The 100 very high marks for creativity, plot, emotional attachment, development, flashbacks, etc.
I truly enjoyed watching and cannot wait for season 6.
Few criticisms if any - little too much torture as a plot device, too much constant plight and struggle, almost zero happy times.
I really miss the Clarke / Lexa relationship, but it's ok. Fondness in absence I guess. Alycia Debnam-Carey as Lexa was exceptional.