Yeah, I used to love watching Thomas when I was a kid. The stories were straightforward but entertaining, the Narrator wasn't annoying/didn't have an annoying voice (whenever I read the Thomas books I would always hear Ringo Starr's voice), the characters were easy to recognize and understand in terms of their emotions/personality (I always remember feeling bad when Thomas cried in the episode where he got stuck in the snow) and there was something of a novelty with it been talking trains instead of just another show with people or animals talking. The crashes and funny lines were also moments that stuck out.
Also, the fact it was created using models meant that if you had either the wooden railway or the actual electric model sets, then you could recreate the stories or create new ones yourself. I've actually still got all the Thomas wooden railway toys me and my brother played with as kids in my Dad's loft upstairs.
When I ended up in hospital during my last year of Junior School due to fracturing my femur in an accident, I did anything I could during my 11 weeks in hospital to keep my mind occupied. Sure enough, I ended up even watching some old Thomas episodes on VHS; finding that not only did I enjoy them from a nostalgic perspective but also just for how they told their stories with simplicity and charm despite it just been a narrator talking over train models with faces on. I also truly realized how much time, effort and money it must have taken to not only create the sets but also continually buy replacements for all the trucks, engines and other vehicles that got damaged or destroyed throughout the numerous episodes, which gave me more appreciation of the show in general.
The nurses and my parents thought I was silly for watching the old Thomas episodes, but I'm not ashamed to say that I enjoyed seeing them despite been 11 years old at the time.
Years later when my nephew started watching television, I got him some Thomas DVDs of the old episodes me and my siblings grew up with for him to watch (I'm not fond of the newer series that use CGI and neither are my siblings) and he loved them, to the point that once that original opening theme started he'd be flapping his hands and jumping up and down with a big grin on his face and making squeaking/squawking noises.
(I wish I'd got it on video as it was so funny).
Additionally, I used to like some of the songs they made to accompany the series; they weren't a major factor towards me liking it as a kid but they were a nice touch.
Anywho, that's all I've got to say on the topic.