Am I the only one who gets tilted from this? [Message to ADCs]

So I was playing Morg, and I landed a binding on the enemy Caitlyn. I thought my adc would actually follow up considering she was below half hp, and he had Jhin w available so it would've been a free kill. Instead, he chose to completely ignore what was going on and continue last hitting a minion. As a result of him neglecting the situation at hand, I got hooked afterwards but I flashed away with 100 hp. Now at this point, I expected him to heal me considering he had an entire 3-4 seconds to respond to what was going on. But nope. He decides to let me die and NOT USE HEAL, giving the enemy adc first blood. He then continues to question why I went in afterwards and blame me for his own mistakes.

Ok, I get that sometimes adcs are more focused on csing early rather than getting kills. That isn't what bothered me. It's the fact that he CHOSE to let me die, when he could have easily saved me by just pressing a button. Now, usually when this happens at the very beginning of a game I'm extremely tilted. If an adc doesn't bother to save me why should I try to help him?

I understand that people can accidentally forget to heal or not react in time, it happens to everyone. But the adcs who have TIME to react and STILL choose to let their support die really piss me off. Whenever something like this happens early, it just causes me to play progressively worse the entire game. So next time if you see your support dying and you have the ability to help, don't just let them die.

Funny enough this guy did less damage compared to me as Jhin.