Which tense to use in this context?

[Kotfor]

Which tense to use in this context?

I used to smoke for 5 years but then I quit and didn't smoke for 3 years. A) Unfortunately, I am smoking regularly again. B) Unfortunately, I smoke regularly again.

[5jj]

Which tense to use in this context?

I used to smoke for 5 years but then I quit and didn't smoke for 3 years. A) Unfortunately, I am smoking regularly again. B) Unfortunately, I smoke regularly again.

The original sentence is not natural. We's say either I smoked for five years... or I used to smoke for five years .... . Either A or B could follow these.

[Kotfor]

The original sentence is not natural. We's say either I smoked for five years... or I used to smoke for five years .... . Either A or B could follow these.

Kind of strange.... I can see a lot of examples of "used to do for + a certain number of years". But that's OK. I am more interested in knowing if there are any subtleties which would call or uncall the usage of one or the other option depending on the context.

[bhaisahab]

Kind of strange.... I can see a lot of examples of "used to do for + a certain number of years". But that's OK. I am more interested in knowing if there are any subtleties which would call or uncall the usage of one or the other option depending on the context.

Where have you seen these examples?