Administrative access, root access in the Linux world, is often overused. For the most part, these super-user level logins should only be used for system setup and administration, and not for everyday use.
Most of the packages that allow remote access, at least in the Linux world, such as ssh and Samba, do not allow the root account to be used by default. While they can be configured to allow access for the root account, they require that it specifically be setup to do so. While it may be tempting to set them up, it should be considered whether or not it is needed. There are very few cases where such a need can be justified.
In the majority of cases, it is better to leave root access disabled. Of course, access for regular users should be thought out and implemented only where needed. When root access is needed in the Linux world, it can usually be handled with much finer control via such things as sudo. For example, the ability to do a system shutdown can be granted to specific users through sudo (sudo shutdown), without giving them access to other superuser level functions.
While the sudo approach takes a little time for planning and implementation, it is much more secure. Far better to spend a little time, than have to recover from a user mistake where they have unlimited access. Or, a malicious, disgruntled employee, which we all hope never happens.
Dave.