The whole point of Hinduism is for the Atma to return back to the Paramatma, so Samsara is literally an obstacle to the end goal. General Good and Bad may be human constructions, but specifically Dharma and Adharma have been determined in sacred texts (Vedas, Upanishads etc.), of Hinduism and by countless of Rishis. And that adhering to a dharmic way of life, being indifferent to Sukha-Duhkha, and pursuing the knowledge of Atman will result in Moksha.

What you're saying may apply to Buddhism, but not Hinduism, because words with the same name such as Karma doe not mean the same in Buddhism as they do in Hinduism due to disagreements of the two dharmas.

Welcome, even though my understanding of Buddhism isn't the strongest, you can see the reply to the explanation that I have by another person.

Thanks for correcting any gaps of my knowledge about Buddhism. I do understand that Nirvana is basically realising what already exists and cutting off the roots of dukkha ie englightment.

However, I'm Hindu, so Samsara is bad to me and thinking so isn't keeping me in it. I believe in Atma and Paramatma and that living multiple lives of false ego and attachment to the impermanent are not good, so Buddhist teachings don't really apply to me.

Yes, regardless of whether you look at Both Hinduism or Buddhism who disagree about Atma, both do agree that samsara is bad because you're stuck in the cycle of rebirth and can't attain liberation from suffering while living through lives, either Moksha to unite back with Brahman (Hinduism) or Nirvana to just stop existing and have no self (Buddhism).