People with a negative view of Buddhism often and only focus on the 1st Noble truth "life is suffering" ...
...and that is a mis-statement of the First Noble Truth anyway. "Unsatisfactoriness is inherent in life" is closer, and it leaves room for the joys that life undeniably holds, while warning that they are transient.
See, for instance https://sites.google.com/site/rahulawhatthebuddha/the-first-noble-truth
The First Noble Truth (Dukkha-ariyasacca) is generally translated by almost all scholars as ‘The Noble Truth of Suffering’, and it is interpreted to mean that life according to Buddhism is nothing but suffering and pain. Both translation and interpretation are highly unsatisfactory and misleading. It is because of this limited, free and easy translation, and its superficial interpretation, that many people have been misled into regarding Buddhism as pessimistic.
The First Noble Truth is not a dismal metaphysical statement saying that everything is suffering. Notice that there is a difference between a metaphysical doctrine in which you are making a statement about The Absolute and a Noble Truth which is a reflection. A Noble Truth is a truth to reflect upon; it is not an absolute; it is not The Absolute. This is where Western people get very confused because they interpret this Noble Truth as a kind of metaphysical truth of Buddhism - but it was never meant to be that.
You can see that the First Noble Truth is not an absolute statement because of the Fourth Noble Truth, which is the way of non-suffering. You cannot have absolute suffering and then have a way out of it, can you? That doesn’t make sense. Yet some people will pick up on the First Noble Truth and say that the Buddha taught that everything is suffering.
The Pali word, dukkha, means "incapable of satisfying" or "not able to bear or withstand anything": always changing, incapable of truly fulfilling us or making us happy.
HAPPINESS IN LIFE
When the Buddha said that there is suffering in life, He did not deny that there is happiness also. On the contrary, He spoke of various kinds of happiness, such as the happiness of friendship, the happiness of family life, and so on. But all these kinds of happiness are impermanent and when one loses them, one suffers. For example, one may like a pleasant and charming person and enjoy his or her company. But when one is separated from that person, the happiness turns into suffering. One suffers because of one's attachment to pleasures that do not last. People often remain unaware of the inevitable sufferings of life because they are distracted by temporary pleasures.