Every day you have to re-ask these questions. This will help to keep your job, relationships, and overall goals in perspective. Do some research. Don't give up so quickly. Don't fall in with the cynics.
Meaning is too vital to ignore.
Just like food and water, your health depends on it. If you think about it, you'll see there is no greater pleasure. Material pleasures are necessary and nice, but they do not compare to the higher pleasures of love and meaning. Imagine being offered 10 million dollars in exchange for one of your children. You may have always known his worth on an intellectual level, but now it becomes real to you.