Im cabin crew. This thread makes me feel like I'm at work!! Why do so many people get so het up about reclining seats?? It's the biggest cause of fights onboard overall. I've done flights where we've had to call the police on landing people have got so OTT about seats.
I think it's everyone's prerogative to recline their seats if they want to. Some people, as has been mentioned, have come in from longer flights on short haul too and just want to sleep. People are on different time zones, people have to go straight to work.. Everyone had different reasons and needs when travelling.
I would always ask someone to put their seat forward for the meal services, but if they're asleep, and particularly on a night flight, I'm not waking them up. Same at breakfast time. I will loudly ask if you want breakfast, but I'm unlikely to wake you up (over 50% of people don't like it!) unless you've asked me to earlier. On my airline it's only the (ahem) larger passengers that can't put their table down with the seat in front reclined. The tv's also move angles so you can see them.
Re someone with a child on their lap. We usually do everything we can to move you to a spare seat or front row. We know it's hard with a child on your knee. We know it's hard for those in front. Sometimes on really busy flights (school holidays particularly on certain routes) we won't be able to. In a situation like the OP was in I would have asked the parent if they wanted to go and sit on my jumpseat for an hour, have a bit more room for the toddler, while the person in front got some sleep for an hour. Give all of them a break.
We don't mind people in the galleys asking for drinks and snacks (although we think the ones that do yoga etc are a bit too much). We don't mind people walking around, it's good for you. Just try not todo it mid meal/drink service when the trolleys are out, they're really heavy to have to keep pushing back and forth to let wanderers past. We don't mind call bells, we know people in window seats etc get trapped in the night when the folk next to them are asleep. What does bug us is when people call us for a drink, we go and get it, then their OH next to them says "can you get me one too!" You also find that out of 300+ passengers! it's about 5 that continually press the bell. (And no, the call bell won't turn the volume on your TV up!)