If your life had no meaning then couldn't you stretch that to include the people you are responsible for, such as children, family?
Yes, absolutely you could easily say that, however that is a risk (and it is important to acknowledge this risk).
What if your personal belief turns out to be wrong? It's highly possible we are all wrong, when it comes to philosophy there really are no definitive answers, and you have to take every possibility into account, and unfortunately the possibilities are practically endless. (Technically, there obviously has to be a definitive answer, but I mean there's probably no possible way we could ever imagine what it actually is.)
Regardless, By taking on other people as responsibilities, you
should additionally take into account what their own opinions on the subject might be, and respect those opinions; chances are they probably don't share the same one.
To say your life has no meaning , you simply don't know that until you've lived it.
This is technically a fair statement, the only problem is it's littered with subjectivity, (but really, what isn't?)
Look at it from this angle, even if life did have a clear cut meaning, and we knew everything there was to know, you could still choose to simply disregard this information, and still personally believe everything is meaningless, including whatever the meaning of life officially is. That's the main reason why the whole "meaning of life" thing is really not a solution at all, it is simply an excuse/scapegoat.
The Superbowl Championship Game is extremely meaningful to a lot of people, but to you personally, it could be completely meaningless. This same exact concept could be applied to anything, including the meaning of life, if we knew what it was.
Nihilists never accomplished anything anyway...
While you may be right, I badly want to quote The Big Lebowski right now...
However, what I believe in is not exactly nihilism, it's actually
absuridism. In absurdism there are 3 ways to deal with the whole "existential crisis/accepting life" problem:
1. Simply just accepting the absurd, admitting we can't really know for sure, and finding reasons to continue living.
2. Find peace from religious/spiritual beliefs
3. Suicide. Although this option is often widely dismissed, it still remains as a possible option. Unfortunately, we really have no idea what happens when you die, for all we know, it isn't even really the end.
I've picked choice #1 myself. I admit that I just can't know, and I think this whole "existing" thing is absolutely insane and unbelievable.
As for #2, I'm personally agnostic (again I just admit we really can't know for sure), but I have no problem with people who turn to religion.
Although the "scriptures" associated with religions probably aren't technically true, and I'm sure even some people who are religious accept this fact (if there was a possibility they were true there would be just one single religion, not many different religions), I think Religion generally installs great lessons and morals into people, which is good (even if some of them are perhaps abiding to these morals for the wrong reasons, like out of fear or just to get into heaven).
As for #3 it's a tough call. Is it 'easier' to "just end it"? Maybe... We don't really know, because we have no idea what happens in death, so it is just as much of a gamble as staying here is... the only difference is that by staying here you know you have control and can make choices.
The majority of people widely believe that when you die "life just stops", "nothing happens", or "you go to heaven" etc...
We say all these different beliefs so much that we actually believe one of them is really true. The chances are none of those things really actually happen.
I think that by constantly believing at least one of these things really actually happens, people feel better about dying. They figure we already actually know what happens, and that makes them not as fearful, or they feel like there's no mystery in death...
Death--and life--are still very much a complete mystery we know nothing about.