I loved Doyle because he was so falable... he was the epitome of humanity, he had his failings in plentitude, what with the drinking and gambling, running with the wrong crowd and his inability to accept who he really was, which resulted in the ending of a happy marriage... but he was also a force for good. The powers that be chose him for a reason. He was the only one who could really get through to Angel, and maybe that is because Doyle reminded Angel of the way he had been as Liam in his previous living incarnation. He also had a huge heart and would do anything for anyone (except pay back money owed to them of course 😉 ) He loved Cordelia, but it was never to be, but he dies a hero (I still cry at that episode every time I watch it), and while we only had him for a few episodes he certainly made his mark, whether we were willing him on with Cordy, laughing at his jokes, crying at his death or simply hoping that his brain wasn't going to get eaten with a shrimp fork.
Funnily enough, when my friends and I talk about what we think will happen in Angel in the future (God how I will miss that ::crying:: ) there is the 2 of us who keep saying things which involve Doyle coming back, but then we remember he can't because it wasn't just Doyle who died... We talked for about 2 minutes about a possible spinoff show with Doyle and what happened to make him be the one chosen by the powers, and then just stopped 'cos we remembered. I still find it hard to believe that Glen is gone...
But he is not forgotten.