it is that, but it is much more as well. technically speaking, Buddhism is called Buddha Dharma and, as such, it is a Dharma. Dharma is an interesting word in Sanskrit and can be applied to a very broad range of subjects. generally speaking, it denote that which "upholds or sustains" human society, religion, ethics and so forth. due to its nuanced nature, it requires a contextual understanding to figure out which aspect of the term is meant.
whilst this seems to be correct, it actually isn't
Vajradhara said:
the term which you have posted as "pain" is, in the Buddha Dharma "dukkha" and this term is more broad that a simple physical sensation of pain. in point of fact, the use of this term is meant to denote the overall experience of sentient beings from painful physical sensations, to painful emotional and psychological sensations to feeings of love and happiness.
Pain is often a very general term I suppose. Perhaps I should have said something more subtle like discomfort, displeasure, shame, humiliation, disgrace, failure to succeed, rejection, depression, loneliness, etc.
Vajradhara said:
what gives rise to dukkha are the kleshas, the mental obscurations which prevent beings from recognizing their own nature. what gives rise to the kleshas is a bit varied, primarily, however, it is tanha, often defined as "an intense craving to be".
I think you will find that neither Judaism, Christianity or Islam see desire/craving as a bad/negative/unhealthy thing. All three suggest that desire/craving can actually be healthy if used properly. For example, love of others (desire to benefit others) is healthy and constructive whereas selfishness (love of oneself and desire to benefit oneself) is unhealthy and destructive.
The basic idea is that we are sentient beings that can desire the benefit of and find value in our peers as well as ourselves. It's not just for practical purposes, but also for sentimental reasons -- for being alive, for existing and wanting that life to continue to exist. Does Buddhism see love as a positive thing too? I'm ready to be surprised. The worst thing to find out is that love is just another selfish desire/craving that deceives us into thinking we're doing something good.
It doesn't sound all selfish to me. Maybe sometimes we also want to see others happy as well as making ourselves happy.