If yes, why? And how do you reconcile that with your faith?

For those who see the hadith as credible and factual, what are your thoughts on those who don't?

How can you be a Muslim and not follow the hadiths when Allah, may He be exalted, has enjoined upon the believers complete submission to the words of the Prophet (blessings and peace of Allah be upon him) and his hadith and rulings, to the extent that He, may He be glorified, swore by His divine self that whoever hears the words of the Prophet (blessings and peace of Allah be upon him), then rejects them and does not accept them, has nothing to do with faith at all. He, may He be glorified and exalted, said (interpretation of the meaning):

“But no, by your Lord, they can have no Faith, until they make you (O Muhammad (blessings and peace of Allah be upon him)) judge in all disputes between them, and find in themselves no resistance against your decisions, and accept (them) with full submission”
[an-Nisa’ 4:65].

Indeed in the Messenger of Allah (Muhammad SAW) you have a good example to follow for him who hopes in (the Meeting with) Allah and the Last Day and remembers Allah much.
(Al-Ahzab, Verse 21)

How do we obey this two verses without following the traditions of the Prophet Salallahu alayhi wasalam?

Moreover, in some instances, the hadiths gives more meaning to acts of worships. Examples are the amounts of Salaah to pray, time of Salaah, How many fasts in Ramadan, how do we start & end the fasts, Zakat and hajj rulings, etc.

"He who does not accept the Authentic Hadiths in its entirety is definitely not a Muslim"