Raising C# events with an extension method - is it bad?

public event EventHandler SomethingHappened;
protected virtual void OnSomethingHappened(EventArgs e)
{
    var handler = SomethingHappened;
    if (handler != null)
        handler(this, e);
}

static public class EventExtensions
{
    static public void RaiseEvent(this EventHandler @event, object sender, EventArgs e)
    {
        var handler = @event;
        if (handler != null)
            handler(sender, e);
    }
    static public void RaiseEvent<T>(this EventHandler<T> @event, object sender, T e)
        where T : EventArgs
    {
        var handler = @event;
        if (handler != null)
            handler(sender, e);
    }
}

public event EventHandler SomethingHappened;

void SomeMethod()
{
    this.SomethingHappened.RaiseEvent(this, EventArgs.Empty);
}

public event EventHandler SomethingHappened = delegate {};

static public void RaiseEvent(this EventHandler @event, object sender, EventArgs e)
{
    if (@event != null)
        @event(sender, e);
}

static public void RaiseEvent<T>(this EventHandler<T> @event, object sender, T e)
    where T : EventArgs
{
    if (@event != null)
        @event(sender, e);
}

public event EventHandler SomethingHappened = delegate{};

static public void RaiseEvent(this EventHandler @event, object sender, EventArgs e)
{
    @event(sender, e);
}

SomethingHappened(this, new EventArgs(...));

SomethingHappend.RaiseEvent(this, new EventArgs(...));