Half par holes for me are rarely that interesting because I'm rarely of the length to take advantage of them. I can count the times I've been up near the green of a par 4 on one hand in my life (once on, once off). Totalling up, I've been putting for eagle 3 times in my whole life - and shot -2 for those 3 holes.
Although I have had a few more chances at eagle than you, I am a pretty short hitter, and what I find appealing about half-par holes is that they let me compete with the big hitters.
On long par threes, and short par fours, I have a decent chance of making the same score as they do, if my wedge game is good.
And on extremely long par fours or shortish par fives, the same is true, but not as much.
Where they absolutely kill me is on 350-380 yard holes. Because they are hitting wedge and I'm not.
K