I feel that people not voting enough is a bigger problem. After all, an accept mark does not bring much value to visitors, if answers are already correctly ordered by votes.
So, no accept is not a big problem.
Actually, accepting an answer too early might lead to situations where the accepted answer is outdated (example on StackOverflowexample on StackOverflow). This is especially true for data requests, which is a domain in which the value of answers might change very fast, as old datasets get outdated and new datasets appear often.