You've given a good example of English words that end in a consonant. Native speakers often sound like they are not enunciating the final consonant, but in fact, they often do make the sound at 25% of the full sound. This doesn't present much of a problem for native listeners because they realize what form of the word is being used based on the context. I would always recommend that non-native English speakers enunciate the final consonant because the listener will not mistake the actual form of the word. The best public speakers always enunciate the final consonants.