You need to accept Paul's message in its entirety:
Don’t you know that when you offer yourselves to someone as obedient slaves, you are slaves of the one you obey—whether you are slaves to sin, which leads to death, or to obedience, which leads to righteousness? 17 But thanks be to God that, though you USED(USED) to be slaves to sin, you have come to obey from your heart the pattern of teaching that has now claimed your allegiance Rom6:16&17
So that's clear, if you are a slave to sin, as Paul uses that terminology it leads to death. The Romans USED(USED) to be slaves to sin but obviously were no longer. They USED to have a lifestyle of wilfull sin, not caring about it/sin dominated their lives but had changed by following Paul's gospel message.
When you WERE(WERE)slaves to sin, you were free from the control of righteousness. 21 What benefit did you reap at that time from the things you are now ashamed of? Those things result in death! Rom6:20&21
That's clear too, if you are/remain a slave to sin as Paul uses the word it ends in death, not life.
Do I accept more of what Paul wrote than dispensationalists do?