Well, IMO both are to be brought back to parents' responsibility.

What I mean is that it seems from quite a number of responses here and from experiences on board that some people only consider their own needs, rather than the impact of their choices on other people. They often then compound this by rather than trying to mitigate impact on others (for example by actively seeking to minimise the disruption they will cause) adopting an attitude of "devil will care" as if there are no others around them.

I don't want to get into a qualitative argument about how valid one reason for travel is compared to another as that would be rather pointless, but instead what I mean is that when travelling some people do not seem bothered by their impact on others, instead expect all the others around them to put up with disruptive behaviour originating from them. It's exceptionally selfish.

FWIW, I very much doubt you would even notice me on a plane or in a lounge. I try, very deliberately, to behave in way that does not impose myself onto others.

Firstly, travelling with a young child where the probability of problems caused by discomfort or any other reason is high, and the prediction of serious disruption therefore too, seems to me to be unwise by itself.

While I am not an physician, but having amongst others discussed this with friends from medical professions, why any parent would want to take babies of a few months old on a plane is beyond me as health-wise I consider it quite unwise too. But as testified in this thread and elsewhere, it seems the overruling reason for doing this is nothing intrinsically to do with the baby, but with parents'/grandparents' etc wishes instead. Again, I find that quite selfish, even beyond the issue of whether or not there is disruption.

Of course not - listen, I responded to an Internet forum question with my opinion, which is what these things are for, but other than that I still have a life to lead

Well, I might be more sceptical about most people's empathy with others or their motives But seriously, the point surely is precisely in what you say here: we share a public space, so we should be responsible in making choices for using it and ensure that when we do we do not impose ourselves on the others.

As a general point, I can't see that happen and as I can't afford the private jet, I'll continue to push for more consideration instead

Again, what I am saying about lifestyle is simple that I'd like people to accept that their choice to life a certain life style, and their travel choices, should not cause harassment to others. I very much try and do that, it's when others don't make the effort or simply aren't bothered that things tend to go wrong. Whether or not they impose by loudly talking twaddle on their phone in the lounge, shoving to the front of a queue, playing their movie on the tablet speaker instead of quiet headphones or by having their family run amok on a plane, to me it's all pretty much the same problem.

Well, you either misunderstood what I said (and I apologise if I was unclear) or you deliberately were sloppy wit the facts in which case you can feel free to apologise to me.

As I have explained above, I don't feel the world revolves around me, which is why, when I use public transport, I will quite actively seek not to impose on others. I keep myself to myself and I very much try to be considerate to others. I think it's very good if no one really notices me and I would very much like not to have to notice others because of their boorish, selfish or otherwise inconsiderate behaviour.